Docker 构建镜像（docker build）
一、docker build命令
docker build 命令用于使用 Dockerfile 创建镜像。
语法
docker build [OPTIONS] PATH | URL | -OPTIONS说明：
- --build-arg=[] :设置镜像创建时的变量；
- --cpu-shares :设置 cpu 使用权重；
- --cpu-period :限制 CPU CFS周期；
- --cpu-quota :限制 CPU CFS配额；
- --cpuset-cpus :指定使用的CPU id；
- --cpuset-mems :指定使用的内存 id；
- --disable-content-trust :忽略校验，默认开启；
- -f :指定要使用的Dockerfile路径；
- --force-rm :设置镜像过程中删除中间容器；
- --isolation :使用容器隔离技术；
- --label=[] :设置镜像使用的元数据；
- -m :设置内存最大值；
- --memory-swap :设置Swap的最大值为内存+swap，"-1"表示不限swap；
- --no-cache :创建镜像的过程不使用缓存；
- --pull :尝试去更新镜像的新版本；
- --quiet, -q :安静模式，成功后只输出镜像 ID；
- --rm :设置镜像成功后删除中间容器；
- --shm-size :设置/dev/shm的大小，默认值是64M；
- --ulimit :Ulimit配置。
- --squash :将 Dockerfile 中所有的操作压缩为一层。
- --tag, -t: 镜像的名字及标签，通常 name:tag 或者 name 格式；可以在一次构建中为一个镜像设置多个标签。
- --network: 默认 default。在构建期间设置RUN指令的网络模式
实例
使用当前目录的 Dockerfile 创建镜像，标签为 runoob/ubuntu:v1。
docker build -t runoob/ubuntu:v1 . 使用URL github.com/creack/docker-firefox 的 Dockerfile 创建镜像。
docker build github.com/creack/docker-firefox也可以通过 -f Dockerfile 文件的位置：
$ docker build -f /path/to/a/Dockerfile .在 Docker 守护进程执行 Dockerfile 中的指令前，首先会对 Dockerfile 进行语法检查，有语法错误时会返回：
$ docker build -t test/myapp .
Sending build context to Docker daemon 2.048 kB
Error response from daemon: Unknown instruction: RUNCMD二、记一次使用dockerfile安装debian并安装好vim,netstat等工具
当然，你也不可以不使用dockerfile,可以把你需要的软件在容器里安装好后，再做成镜像。不过，人家官方也不特别推荐这种做法，于是就努力研究dockerfile。
debian的docker镜像中默认是不带vim，netstat,ifconfig等网络工具的，也没有ssh的。没有这些工具，想要进入到容器内部操作，那就十分困难了。
通过N天的努力，终于成功了。现把文件给大家分享出来。
我所使用的是debian:jessie版本。
其实很简单，就是使用dockerfile修改下软件默认的源。其他的功能，找个dockerfile参考下。
把我的代码贴上来,此案例是参考php-fpm，在他的基础之上，我增加了ssh,vim,net-tools等功能
FROM debian:jessie
#更新apt-get源 使用sohu的源
RUN mv /etc/apt/sources.list /etc/apt/sources.list.bak && \
echo "deb http://mirrors.163.com/debian/ jessie main non-free contrib" >/etc/apt/sources.list && \
echo "deb http://mirrors.163.com/debian/ jessie-proposed-updates main non-free contrib" >>/etc/apt/sources.list && \
echo "deb-src http://mirrors.163.com/debian/ jessie main non-free contrib" >>/etc/apt/sources.list && \
echo "deb-src http://mirrors.163.com/debian/ jessie-proposed-updates main non-free contrib" >>/etc/apt/sources.list
#RUN apt-get -o Acquire::Check-Valid-Until=false update
#安装ssh服务
# Install packages
RUN apt-get update && apt-get -y install openssh-server pwgen && \
mkdir -p /var/run/sshd && \
sed -i "s/UsePrivilegeSeparation.*/UsePrivilegeSeparation no/g" /etc/ssh/sshd_config && \
sed -i "s/PermitRootLogin without-password/PermitRootLogin yes/g" /etc/ssh/sshd_config
ADD set_root_pw.sh /set_root_pw.sh
ADD run.sh /run.sh
RUN chmod +x /*.sh
ENV AUTHORIZED_KEYS **None**
#安装相关工具
RUN apt-get update && apt-get install net-tools
RUN apt-get update && apt-get install vim -y
# persistent / runtime deps
RUN apt-get update && apt-get install -y ca-certificates curl librecode0 libsqlite3-0 libxml2 --no-install-recommends && rm -r /var/lib/apt/lists/*
# phpize deps
RUN apt-get update && apt-get install -y autoconf file g++ gcc libc-dev make pkg-config re2c --no-install-recommends && rm -r /var/lib/apt/lists/*
ENV PHP_INI_DIR /usr/local/etc/php
RUN mkdir -p $PHP_INI_DIR/conf.d
##<autogenerated>##
ENV PHP_EXTRA_CONFIGURE_ARGS --enable-fpm --with-fpm-user=www-data --with-fpm-group=www-data
##</autogenerated>##
ENV GPG_KEYS 0BD78B5F97500D450838F95DFE857D9A90D90EC1 6E4F6AB321FDC07F2C332E3AC2BF0BC433CFC8B3
RUN set -xe \
&& for key in $GPG_KEYS; do \
gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
done
ENV PHP_VERSION 5.6.15
# --enable-mysqlnd is included below because it's harder to compile after the fact the extensions are (since it's a plugin for several extensions, not an extension in itself)
RUN buildDeps=" \
$PHP_EXTRA_BUILD_DEPS \
libcurl4-openssl-dev \
libreadline6-dev \
librecode-dev \
libsqlite3-dev \
libssl-dev \
libxml2-dev \
xz-utils \
" \
&& set -x \
&& apt-get update && apt-get install -y $buildDeps --no-install-recommends \
&& rm -rf /var/lib/apt/lists/* \
&& curl -SL "http://php.net/get/php-$PHP_VERSION.tar.xz/from/this/mirror" -o php.tar.xz \
&& curl -SL "http://php.net/get/php-$PHP_VERSION.tar.xz.asc/from/this/mirror" -o php.tar.xz.asc \
&& gpg --verify php.tar.xz.asc \
&& mkdir -p /usr/src/php \
&& tar -xof php.tar.xz -C /usr/src/php --strip-components=1 \
&& rm php.tar.xz* \
&& cd /usr/src/php \
&& ./configure \
--with-config-file-path="$PHP_INI_DIR" \
--with-config-file-scan-dir="$PHP_INI_DIR/conf.d" \
$PHP_EXTRA_CONFIGURE_ARGS \
--disable-cgi \
--enable-mysqlnd \
--with-curl \
--with-openssl \
--with-readline \
--with-recode \
--with-zlib \
&& make -j"$(nproc)" \
&& make install \
&& { find /usr/local/bin /usr/local/sbin -type f -executable -exec strip --strip-all '{}' + || true; } \
&& apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false -o APT::AutoRemove::SuggestsImportant=false $buildDeps \
&& make clean
COPY docker-php-ext-* /usr/local/bin/
##<autogenerated>##
WORKDIR /var/www/html
COPY php-fpm.conf /usr/local/etc/
EXPOSE 22 9000
CMD ["/run.sh"]
#CMD ["php-fpm"]
##</autogenerated>##三、构建mysql容器
使用 https://github.com/docker-library/mysql 文件
Dockerfile
#
# NOTE: THIS DOCKERFILE IS GENERATED VIA "apply-templates.sh"
#
# PLEASE DO NOT EDIT IT DIRECTLY.
#
FROM debian:buster-slim
# add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added
RUN groupadd -r mysql && useradd -r -g mysql mysql
RUN apt-get update && apt-get install -y --no-install-recommends gnupg dirmngr && rm -rf /var/lib/apt/lists/*
# add gosu for easy step-down from root
# https://github.com/tianon/gosu/releases
ENV GOSU_VERSION 1.14
RUN set -eux; \
savedAptMark="$(apt-mark showmanual)"; \
apt-get update; \
apt-get install -y --no-install-recommends ca-certificates wget; \
rm -rf /var/lib/apt/lists/*; \
dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')"; \
wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch"; \
wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc"; \
export GNUPGHOME="$(mktemp -d)"; \
gpg --batch --keyserver hkps://keys.openpgp.org --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4; \
gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu; \
gpgconf --kill all; \
rm -rf "$GNUPGHOME" /usr/local/bin/gosu.asc; \
apt-mark auto '.*' > /dev/null; \
[ -z "$savedAptMark" ] || apt-mark manual $savedAptMark > /dev/null; \
apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \
chmod +x /usr/local/bin/gosu; \
gosu --version; \
gosu nobody true
RUN mkdir /docker-entrypoint-initdb.d
RUN apt-get update && apt-get install -y --no-install-recommends \
# for MYSQL_RANDOM_ROOT_PASSWORD
pwgen \
# for mysql_ssl_rsa_setup
openssl \
# FATAL ERROR: please install the following Perl modules before executing /usr/local/mysql/scripts/mysql_install_db:
# File::Basename
# File::Copy
# Sys::Hostname
# Data::Dumper
perl \
# install "xz-utils" for .sql.xz docker-entrypoint-initdb.d files
xz-utils \
&& rm -rf /var/lib/apt/lists/*
RUN set -ex; \
# gpg: key 5072E1F5: public key "MySQL Release Engineering <mysql-build@oss.oracle.com>" imported
key='A4A9406876FCBD3C456770C88C718D3B5072E1F5'; \
export GNUPGHOME="$(mktemp -d)"; \
gpg --batch --keyserver keyserver.ubuntu.com --recv-keys "$key"; \
gpg --batch --export "$key" > /etc/apt/trusted.gpg.d/mysql.gpg; \
gpgconf --kill all; \
rm -rf "$GNUPGHOME"; \
apt-key list > /dev/null
ENV MYSQL_MAJOR 5.7
ENV MYSQL_VERSION 5.7.36-1debian10
RUN echo 'deb http://repo.mysql.com/apt/debian/ buster mysql-5.7' > /etc/apt/sources.list.d/mysql.list
# the "/var/lib/mysql" stuff here is because the mysql-server postinst doesn't have an explicit way to disable the mysql_install_db codepath besides having a database already "configured" (ie, stuff in /var/lib/mysql/mysql)
# also, we set debconf keys to make APT a little quieter
RUN { \
echo mysql-community-server mysql-community-server/data-dir select ''; \
echo mysql-community-server mysql-community-server/root-pass password ''; \
echo mysql-community-server mysql-community-server/re-root-pass password ''; \
echo mysql-community-server mysql-community-server/remove-test-db select false; \
} | debconf-set-selections \
&& apt-get update \
&& apt-get install -y \
mysql-server="${MYSQL_VERSION}" \
# comment out a few problematic configuration values
&& find /etc/mysql/ -name '*.cnf' -print0 \
| xargs -0 grep -lZE '^(bind-address|log)' \
| xargs -rt -0 sed -Ei 's/^(bind-address|log)/#&/' \
# don't reverse lookup hostnames, they are usually another container
&& echo '[mysqld]\nskip-host-cache\nskip-name-resolve' > /etc/mysql/conf.d/docker.cnf \
&& rm -rf /var/lib/apt/lists/* \
&& rm -rf /var/lib/mysql && mkdir -p /var/lib/mysql /var/run/mysqld \
&& chown -R mysql:mysql /var/lib/mysql /var/run/mysqld \
# ensure that /var/run/mysqld (used for socket and lock files) is writable regardless of the UID our mysqld instance ends up having at runtime
&& chmod 1777 /var/run/mysqld /var/lib/mysql
VOLUME /var/lib/mysql
COPY docker-entrypoint.sh /usr/local/bin/
RUN ln -s usr/local/bin/docker-entrypoint.sh /entrypoint.sh # backwards compat
ENTRYPOINT ["docker-entrypoint.sh"]
EXPOSE 3306 33060
CMD ["mysqld"]docker-entrypoint.sh
#!/bin/bash
set -eo pipefail
shopt -s nullglob
# logging functions
mysql_log() {
local type="$1"; shift
# accept argument string or stdin
local text="$*"; if [ "$#" -eq 0 ]; then text="$(cat)"; fi
local dt; dt="$(date --rfc-3339=seconds)"
printf '%s [%s] [Entrypoint]: %s\n' "$dt" "$type" "$text"
}
mysql_note() {
mysql_log Note "$@"
}
mysql_warn() {
mysql_log Warn "$@" >&2
}
mysql_error() {
mysql_log ERROR "$@" >&2
exit 1
}
# usage: file_env VAR [DEFAULT]
# ie: file_env 'XYZ_DB_PASSWORD' 'example'
# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
# "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
file_env() {
local var="$1"
local fileVar="${var}_FILE"
local def="${2:-}"
if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
mysql_error "Both $var and $fileVar are set (but are exclusive)"
fi
local val="$def"
if [ "${!var:-}" ]; then
val="${!var}"
elif [ "${!fileVar:-}" ]; then
val="$(< "${!fileVar}")"
fi
export "$var"="$val"
unset "$fileVar"
}
# check to see if this file is being run or sourced from another script
_is_sourced() {
# https://unix.stackexchange.com/a/215279
[ "${#FUNCNAME[@]}" -ge 2 ] \
&& [ "${FUNCNAME[0]}" = '_is_sourced' ] \
&& [ "${FUNCNAME[1]}" = 'source' ]
}
# usage: docker_process_init_files [file [file [...]]]
# ie: docker_process_init_files /always-initdb.d/*
# process initializer files, based on file extensions
docker_process_init_files() {
# mysql here for backwards compatibility "${mysql[@]}"
mysql=( docker_process_sql )
echo
local f
for f; do
case "$f" in
*.sh)
# https://github.com/docker-library/postgres/issues/450#issuecomment-393167936
# https://github.com/docker-library/postgres/pull/452
if [ -x "$f" ]; then
mysql_note "$0: running $f"
"$f"
else
mysql_note "$0: sourcing $f"
. "$f"
fi
;;
*.sql) mysql_note "$0: running $f"; docker_process_sql < "$f"; echo ;;
*.sql.gz) mysql_note "$0: running $f"; gunzip -c "$f" | docker_process_sql; echo ;;
*.sql.xz) mysql_note "$0: running $f"; xzcat "$f" | docker_process_sql; echo ;;
*) mysql_warn "$0: ignoring $f" ;;
esac
echo
done
}
# arguments necessary to run "mysqld --verbose --help" successfully (used for testing configuration validity and for extracting default/configured values)
_verboseHelpArgs=(
--verbose --help
--log-bin-index="$(mktemp -u)" # https://github.com/docker-library/mysql/issues/136
)
mysql_check_config() {
local toRun=( "$@" "${_verboseHelpArgs[@]}" ) errors
if ! errors="$("${toRun[@]}" 2>&1 >/dev/null)"; then
mysql_error $'mysqld failed while attempting to check config\n\tcommand was: '"${toRun[*]}"$'\n\t'"$errors"
fi
}
# Fetch value from server config
# We use mysqld --verbose --help instead of my_print_defaults because the
# latter only show values present in config files, and not server defaults
mysql_get_config() {
local conf="$1"; shift
"$@" "${_verboseHelpArgs[@]}" 2>/dev/null \
| awk -v conf="$conf" '$1 == conf && /^[^ \t]/ { sub(/^[^ \t]+[ \t]+/, ""); print; exit }'
# match "datadir /some/path with/spaces in/it here" but not "--xyz=abc\n datadir (xyz)"
}
# Do a temporary startup of the MySQL server, for init purposes
docker_temp_server_start() {
if [ "${MYSQL_MAJOR}" = '5.6' ] || [ "${MYSQL_MAJOR}" = '5.7' ]; then
"$@" --skip-networking --default-time-zone=SYSTEM --socket="${SOCKET}" &
mysql_note "Waiting for server startup"
local i
for i in {30..0}; do
# only use the root password if the database has already been initialized
# so that it won't try to fill in a password file when it hasn't been set yet
extraArgs=()
if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
extraArgs+=( '--dont-use-mysql-root-password' )
fi
if docker_process_sql "${extraArgs[@]}" --database=mysql <<<'SELECT 1' &> /dev/null; then
break
fi
sleep 1
done
if [ "$i" = 0 ]; then
mysql_error "Unable to start server."
fi
else
# For 5.7+ the server is ready for use as soon as startup command unblocks
if ! "$@" --daemonize --skip-networking --default-time-zone=SYSTEM --socket="${SOCKET}"; then
mysql_error "Unable to start server."
fi
fi
}
# Stop the server. When using a local socket file mysqladmin will block until
# the shutdown is complete.
docker_temp_server_stop() {
if ! mysqladmin --defaults-extra-file=<( _mysql_passfile ) shutdown -uroot --socket="${SOCKET}"; then
mysql_error "Unable to shut down server."
fi
}
# Verify that the minimally required password settings are set for new databases.
docker_verify_minimum_env() {
if [ -z "$MYSQL_ROOT_PASSWORD" -a -z "$MYSQL_ALLOW_EMPTY_PASSWORD" -a -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
mysql_error <<-'EOF'
Database is uninitialized and password option is not specified
You need to specify one of the following:
- MYSQL_ROOT_PASSWORD
- MYSQL_ALLOW_EMPTY_PASSWORD
- MYSQL_RANDOM_ROOT_PASSWORD
EOF
fi
# This will prevent the CREATE USER from failing (and thus exiting with a half-initialized database)
if [ "$MYSQL_USER" = 'root' ]; then
mysql_error <<-'EOF'
MYSQL_USER="root", MYSQL_USER and MYSQL_PASSWORD are for configuring a regular user and cannot be used for the root user
Remove MYSQL_USER="root" and use one of the following to control the root user password:
- MYSQL_ROOT_PASSWORD
- MYSQL_ALLOW_EMPTY_PASSWORD
- MYSQL_RANDOM_ROOT_PASSWORD
EOF
fi
# warn when missing one of MYSQL_USER or MYSQL_PASSWORD
if [ -n "$MYSQL_USER" ] && [ -z "$MYSQL_PASSWORD" ]; then
mysql_warn 'MYSQL_USER specified, but missing MYSQL_PASSWORD; MYSQL_USER will not be created'
elif [ -z "$MYSQL_USER" ] && [ -n "$MYSQL_PASSWORD" ]; then
mysql_warn 'MYSQL_PASSWORD specified, but missing MYSQL_USER; MYSQL_PASSWORD will be ignored'
fi
}
# creates folders for the database
# also ensures permission for user mysql of run as root
docker_create_db_directories() {
local user; user="$(id -u)"
# TODO other directories that are used by default? like /var/lib/mysql-files
# see https://github.com/docker-library/mysql/issues/562
mkdir -p "$DATADIR"
if [ "$user" = "0" ]; then
# this will cause less disk access than `chown -R`
find "$DATADIR" \! -user mysql -exec chown mysql '{}' +
fi
}
# initializes the database directory
docker_init_database_dir() {
mysql_note "Initializing database files"
if [ "$MYSQL_MAJOR" = '5.6' ]; then
mysql_install_db --datadir="$DATADIR" --rpm --keep-my-cnf "${@:2}" --default-time-zone=SYSTEM
else
"$@" --initialize-insecure --default-time-zone=SYSTEM
fi
mysql_note "Database files initialized"
if command -v mysql_ssl_rsa_setup > /dev/null && [ ! -e "$DATADIR/server-key.pem" ]; then
# https://github.com/mysql/mysql-server/blob/23032807537d8dd8ee4ec1c4d40f0633cd4e12f9/packaging/deb-in/extra/mysql-systemd-start#L81-L84
mysql_note "Initializing certificates"
mysql_ssl_rsa_setup --datadir="$DATADIR"
mysql_note "Certificates initialized"
fi
}
# Loads various settings that are used elsewhere in the script
# This should be called after mysql_check_config, but before any other functions
docker_setup_env() {
# Get config
declare -g DATADIR SOCKET
DATADIR="$(mysql_get_config 'datadir' "$@")"
SOCKET="$(mysql_get_config 'socket' "$@")"
# Initialize values that might be stored in a file
file_env 'MYSQL_ROOT_HOST' '%'
file_env 'MYSQL_DATABASE'
file_env 'MYSQL_USER'
file_env 'MYSQL_PASSWORD'
file_env 'MYSQL_ROOT_PASSWORD'
declare -g DATABASE_ALREADY_EXISTS
if [ -d "$DATADIR/mysql" ]; then
DATABASE_ALREADY_EXISTS='true'
fi
}
# Execute sql script, passed via stdin
# usage: docker_process_sql [--dont-use-mysql-root-password] [mysql-cli-args]
# ie: docker_process_sql --database=mydb <<<'INSERT ...'
# ie: docker_process_sql --dont-use-mysql-root-password --database=mydb <my-file.sql
docker_process_sql() {
passfileArgs=()
if [ '--dont-use-mysql-root-password' = "$1" ]; then
passfileArgs+=( "$1" )
shift
fi
# args sent in can override this db, since they will be later in the command
if [ -n "$MYSQL_DATABASE" ]; then
set -- --database="$MYSQL_DATABASE" "$@"
fi
mysql --defaults-extra-file=<( _mysql_passfile "${passfileArgs[@]}") --protocol=socket -uroot -hlocalhost --socket="${SOCKET}" --comments "$@"
}
# Initializes database with timezone info and root password, plus optional extra db/user
docker_setup_db() {
# Load timezone info into database
if [ -z "$MYSQL_INITDB_SKIP_TZINFO" ]; then
# sed is for https://bugs.mysql.com/bug.php?id=20545
mysql_tzinfo_to_sql /usr/share/zoneinfo \
| sed 's/Local time zone must be set--see zic manual page/FCTY/' \
| docker_process_sql --dont-use-mysql-root-password --database=mysql
# tell docker_process_sql to not use MYSQL_ROOT_PASSWORD since it is not set yet
fi
# Generate random root password
if [ -n "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
export MYSQL_ROOT_PASSWORD="$(pwgen -1 32)"
mysql_note "GENERATED ROOT PASSWORD: $MYSQL_ROOT_PASSWORD"
fi
# Sets root password and creates root users for non-localhost hosts
local rootCreate=
# default root to listen for connections from anywhere
if [ -n "$MYSQL_ROOT_HOST" ] && [ "$MYSQL_ROOT_HOST" != 'localhost' ]; then
# no, we don't care if read finds a terminating character in this heredoc
# https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression/265151#265151
read -r -d '' rootCreate <<-EOSQL || true
CREATE USER 'root'@'${MYSQL_ROOT_HOST}' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
GRANT ALL ON *.* TO 'root'@'${MYSQL_ROOT_HOST}' WITH GRANT OPTION ;
EOSQL
fi
local passwordSet=
if [ "$MYSQL_MAJOR" = '5.6' ]; then
# no, we don't care if read finds a terminating character in this heredoc (see above)
read -r -d '' passwordSet <<-EOSQL || true
DELETE FROM mysql.user WHERE user NOT IN ('mysql.sys', 'mysqlxsys', 'root') OR host NOT IN ('localhost') ;
SET PASSWORD FOR 'root'@'localhost'=PASSWORD('${MYSQL_ROOT_PASSWORD}') ;
-- 5.5: https://github.com/mysql/mysql-server/blob/e48d775c6f066add457fa8cfb2ebc4d5ff0c7613/scripts/mysql_secure_installation.sh#L192-L210
-- 5.6: https://github.com/mysql/mysql-server/blob/06bc670db0c0e45b3ea11409382a5c315961f682/scripts/mysql_secure_installation.sh#L218-L236
-- 5.7: https://github.com/mysql/mysql-server/blob/913071c0b16cc03e703308250d795bc381627e37/client/mysql_secure_installation.cc#L792-L818
-- 8.0: https://github.com/mysql/mysql-server/blob/b93c1661d689c8b7decc7563ba15f6ed140a4eb6/client/mysql_secure_installation.cc#L726-L749
DELETE FROM mysql.db WHERE Db='test' OR Db='test\_%' ;
-- https://github.com/docker-library/mysql/pull/479#issuecomment-414561272 ("This is only needed for 5.5 and 5.6")
EOSQL
else
# no, we don't care if read finds a terminating character in this heredoc (see above)
read -r -d '' passwordSet <<-EOSQL || true
ALTER USER 'root'@'localhost' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
EOSQL
fi
# tell docker_process_sql to not use MYSQL_ROOT_PASSWORD since it is just now being set
docker_process_sql --dont-use-mysql-root-password --database=mysql <<-EOSQL
-- What's done in this file shouldn't be replicated
-- or products like mysql-fabric won't work
SET @@SESSION.SQL_LOG_BIN=0;
${passwordSet}
GRANT ALL ON *.* TO 'root'@'localhost' WITH GRANT OPTION ;
FLUSH PRIVILEGES ;
${rootCreate}
DROP DATABASE IF EXISTS test ;
EOSQL
# Creates a custom database and user if specified
if [ -n "$MYSQL_DATABASE" ]; then
mysql_note "Creating database ${MYSQL_DATABASE}"
docker_process_sql --database=mysql <<<"CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;"
fi
if [ -n "$MYSQL_USER" ] && [ -n "$MYSQL_PASSWORD" ]; then
mysql_note "Creating user ${MYSQL_USER}"
docker_process_sql --database=mysql <<<"CREATE USER '$MYSQL_USER'@'%' IDENTIFIED BY '$MYSQL_PASSWORD' ;"
if [ -n "$MYSQL_DATABASE" ]; then
mysql_note "Giving user ${MYSQL_USER} access to schema ${MYSQL_DATABASE}"
docker_process_sql --database=mysql <<<"GRANT ALL ON \`${MYSQL_DATABASE//_/\\_}\`.* TO '$MYSQL_USER'@'%' ;"
fi
fi
}
_mysql_passfile() {
# echo the password to the "file" the client uses
# the client command will use process substitution to create a file on the fly
# ie: --defaults-extra-file=<( _mysql_passfile )
if [ '--dont-use-mysql-root-password' != "$1" ] && [ -n "$MYSQL_ROOT_PASSWORD" ]; then
cat <<-EOF
[client]
password="${MYSQL_ROOT_PASSWORD}"
EOF
fi
}
# Mark root user as expired so the password must be changed before anything
# else can be done (only supported for 5.6+)
mysql_expire_root_user() {
if [ -n "$MYSQL_ONETIME_PASSWORD" ]; then
docker_process_sql --database=mysql <<-EOSQL
ALTER USER 'root'@'%' PASSWORD EXPIRE;
EOSQL
fi
}
# check arguments for an option that would cause mysqld to stop
# return true if there is one
_mysql_want_help() {
local arg
for arg; do
case "$arg" in
-'?'|--help|--print-defaults|-V|--version)
return 0
;;
esac
done
return 1
}
_main() {
# if command starts with an option, prepend mysqld
if [ "${1:0:1}" = '-' ]; then
set -- mysqld "$@"
fi
# skip setup if they aren't running mysqld or want an option that stops mysqld
if [ "$1" = 'mysqld' ] && ! _mysql_want_help "$@"; then
mysql_note "Entrypoint script for MySQL Server ${MYSQL_VERSION} started."
mysql_check_config "$@"
# Load various environment variables
docker_setup_env "$@"
docker_create_db_directories
# If container is started as root user, restart as dedicated mysql user
if [ "$(id -u)" = "0" ]; then
mysql_note "Switching to dedicated user 'mysql'"
exec gosu mysql "$BASH_SOURCE" "$@"
fi
# there's no database, so it needs to be initialized
if [ -z "$DATABASE_ALREADY_EXISTS" ]; then
docker_verify_minimum_env
# check dir permissions to reduce likelihood of half-initialized database
ls /docker-entrypoint-initdb.d/ > /dev/null
docker_init_database_dir "$@"
mysql_note "Starting temporary server"
docker_temp_server_start "$@"
mysql_note "Temporary server started."
docker_setup_db
docker_process_init_files /docker-entrypoint-initdb.d/*
mysql_expire_root_user
mysql_note "Stopping temporary server"
docker_temp_server_stop
mysql_note "Temporary server stopped"
echo
mysql_note "MySQL init process done. Ready for start up."
echo
fi
fi
exec "$@"
}
# If we are sourced from elsewhere, don't perform any further actions
if ! _is_sourced; then
_main "$@"
fi
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