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ltangvaldyosifkit
ltangvald
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yosifkit
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Make template for 5.7+ entrypoint script
5.7 and 8.0 can use the exact same entrypoint script, so simply have the update script copy it from a template location.
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‎template.Debian/docker-entrypoint.sh

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#!/bin/bash
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set -eo pipefail
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shopt -s nullglob
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# if command starts with an option, prepend mysqld
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if [ "${1:0:1}" = '-' ]; then
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set -- mysqld "$@"
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fi
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# skip setup if they want an option that stops mysqld
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wantHelp=
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for arg; do
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case "$arg" in
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-'?'|--help|--print-defaults|-V|--version)
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wantHelp=1
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break
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;;
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esac
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done
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# usage: file_env VAR [DEFAULT]
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# ie: file_env 'XYZ_DB_PASSWORD' 'example'
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# (will allow for "$XYZ_DB_PASSWORD_FILE" to fill in the value of
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# "$XYZ_DB_PASSWORD" from a file, especially for Docker's secrets feature)
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file_env() {
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local var="$1"
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local fileVar="${var}_FILE"
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local def="${2:-}"
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if [ "${!var:-}" ] && [ "${!fileVar:-}" ]; then
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echo >&2 "error: both $var and $fileVar are set (but are exclusive)"
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exit 1
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fi
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local val="$def"
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if [ "${!var:-}" ]; then
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val="${!var}"
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elif [ "${!fileVar:-}" ]; then
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val="$(< "${!fileVar}")"
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fi
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export "$var"="$val"
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unset "$fileVar"
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}
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# usage: process_init_file FILENAME MYSQLCOMMAND...
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# ie: process_init_file foo.sh mysql -uroot
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# (process a single initializer file, based on its extension. we define this
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# function here, so that initializer scripts (*.sh) can use the same logic,
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# potentially recursively, or override the logic used in subsequent calls)
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process_init_file() {
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local f="$1"; shift
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local mysql=( "$@" )
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case "$f" in
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*.sh) echo "$0: running $f"; . "$f" ;;
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*.sql) echo "$0: running $f"; "${mysql[@]}" < "$f"; echo ;;
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*.sql.gz) echo "$0: running $f"; gunzip -c "$f" | "${mysql[@]}"; echo ;;
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*) echo "$0: ignoring $f" ;;
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esac
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echo
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}
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_check_config() {
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toRun=( "$@" --verbose --help )
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if ! errors="$("${toRun[@]}" 2>&1 >/dev/null)"; then
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cat >&2 <<-EOM
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ERROR: mysqld failed while attempting to check config
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command was: "${toRun[*]}"
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$errors
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EOM
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exit 1
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fi
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}
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# Fetch value from server config
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# We use mysqld --verbose --help instead of my_print_defaults because the
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# latter only show values present in config files, and not server defaults
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_get_config() {
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local conf="$1"; shift
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"$@" --verbose --help --log-bin-index="$(mktemp -u)" 2>/dev/null \
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| awk '$1 == "'"$conf"'" && /^[^ \t]/ { sub(/^[^ \t]+[ \t]+/, ""); print; exit }'
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# match "datadir /some/path with/spaces in/it here" but not "--xyz=abc\n datadir (xyz)"
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}
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# allow the container to be started with `--user`
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if [ "$1" = 'mysqld' -a -z "$wantHelp" -a "$(id -u)" = '0' ]; then
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_check_config "$@"
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DATADIR="$(_get_config 'datadir' "$@")"
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mkdir -p "$DATADIR"
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chown -R mysql:mysql "$DATADIR"
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exec gosu mysql "$BASH_SOURCE" "$@"
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fi
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if [ "$1" = 'mysqld' -a -z "$wantHelp" ]; then
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# still need to check config, container may have started with --user
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_check_config "$@"
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# Get config
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DATADIR="$(_get_config 'datadir' "$@")"
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if [ ! -d "$DATADIR/mysql" ]; then
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file_env 'MYSQL_ROOT_PASSWORD'
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if [ -z "$MYSQL_ROOT_PASSWORD" -a -z "$MYSQL_ALLOW_EMPTY_PASSWORD" -a -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
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echo >&2 'error: database is uninitialized and password option is not specified '
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echo >&2 ' You need to specify one of MYSQL_ROOT_PASSWORD, MYSQL_ALLOW_EMPTY_PASSWORD and MYSQL_RANDOM_ROOT_PASSWORD'
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exit 1
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fi
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mkdir -p "$DATADIR"
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echo 'Initializing database'
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"$@" --initialize-insecure
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echo 'Database initialized'
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if command -v mysql_ssl_rsa_setup > /dev/null && [ ! -e "$DATADIR/server-key.pem" ]; then
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# https://github.com/mysql/mysql-server/blob/23032807537d8dd8ee4ec1c4d40f0633cd4e12f9/packaging/deb-in/extra/mysql-systemd-start#L81-L84
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echo 'Initializing certificates'
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mysql_ssl_rsa_setup --datadir="$DATADIR"
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echo 'Certificates initialized'
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fi
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SOCKET="$(_get_config 'socket' "$@")"
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"$@" --skip-networking --socket="${SOCKET}" &
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pid="$!"
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mysql=( mysql --protocol=socket -uroot -hlocalhost --socket="${SOCKET}" )
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for i in {30..0}; do
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if echo 'SELECT 1' | "${mysql[@]}" &> /dev/null; then
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break
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fi
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echo 'MySQL init process in progress...'
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sleep 1
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done
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if [ "$i" = 0 ]; then
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echo >&2 'MySQL init process failed.'
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exit 1
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fi
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if [ -z "$MYSQL_INITDB_SKIP_TZINFO" ]; then
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# sed is for https://bugs.mysql.com/bug.php?id=20545
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mysql_tzinfo_to_sql /usr/share/zoneinfo | sed 's/Local time zone must be set--see zic manual page/FCTY/' | "${mysql[@]}" mysql
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fi
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if [ ! -z "$MYSQL_RANDOM_ROOT_PASSWORD" ]; then
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export MYSQL_ROOT_PASSWORD="$(pwgen -1 32)"
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echo "GENERATED ROOT PASSWORD: $MYSQL_ROOT_PASSWORD"
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fi
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rootCreate=
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# default root to listen for connections from anywhere
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file_env 'MYSQL_ROOT_HOST' '%'
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if [ ! -z "$MYSQL_ROOT_HOST" -a "$MYSQL_ROOT_HOST" != 'localhost' ]; then
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# no, we don't care if read finds a terminating character in this heredoc
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# https://unix.stackexchange.com/questions/265149/why-is-set-o-errexit-breaking-this-read-heredoc-expression/265151#265151
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read -r -d '' rootCreate <<-EOSQL || true
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CREATE USER 'root'@'${MYSQL_ROOT_HOST}' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
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GRANT ALL ON *.* TO 'root'@'${MYSQL_ROOT_HOST}' WITH GRANT OPTION ;
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EOSQL
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fi
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"${mysql[@]}" <<-EOSQL
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-- What's done in this file shouldn't be replicated
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-- or products like mysql-fabric won't work
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SET @@SESSION.SQL_LOG_BIN=0;
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ALTER USER 'root'@'localhost' IDENTIFIED BY '${MYSQL_ROOT_PASSWORD}' ;
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GRANT ALL ON *.* TO 'root'@'localhost' WITH GRANT OPTION ;
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${rootCreate}
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DROP DATABASE IF EXISTS test ;
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FLUSH PRIVILEGES ;
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EOSQL
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if [ ! -z "$MYSQL_ROOT_PASSWORD" ]; then
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mysql+=( -p"${MYSQL_ROOT_PASSWORD}" )
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fi
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file_env 'MYSQL_DATABASE'
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if [ "$MYSQL_DATABASE" ]; then
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echo "CREATE DATABASE IF NOT EXISTS \`$MYSQL_DATABASE\` ;" | "${mysql[@]}"
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mysql+=( "$MYSQL_DATABASE" )
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fi
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file_env 'MYSQL_USER'
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file_env 'MYSQL_PASSWORD'
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if [ "$MYSQL_USER" -a "$MYSQL_PASSWORD" ]; then
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echo "CREATE USER '$MYSQL_USER'@'%' IDENTIFIED BY '$MYSQL_PASSWORD' ;" | "${mysql[@]}"
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if [ "$MYSQL_DATABASE" ]; then
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echo "GRANT ALL ON \`$MYSQL_DATABASE\`.* TO '$MYSQL_USER'@'%' ;" | "${mysql[@]}"
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fi
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echo 'FLUSH PRIVILEGES ;' | "${mysql[@]}"
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fi
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echo
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for f in /docker-entrypoint-initdb.d/*; do
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process_init_file "$f" "${mysql[@]}"
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done
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if [ ! -z "$MYSQL_ONETIME_PASSWORD" ]; then
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"${mysql[@]}" <<-EOSQL
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ALTER USER 'root'@'%' PASSWORD EXPIRE;
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EOSQL
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fi
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if ! kill -s TERM "$pid" || ! wait "$pid"; then
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echo >&2 'MySQL init process failed.'
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exit 1
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fi
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echo
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echo 'MySQL init process done. Ready for start up.'
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echo
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fi
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fi
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exec "$@"

‎update.sh

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@@ -14,7 +14,14 @@ declare -A debianVariants=(
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#[5.5]='jessie'
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)
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# Copy entrypoint template
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templateVersions=( "5.7 8.0" )
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for version in ${templateVersions}; do
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cp "template.Debian/docker-entrypoint.sh" "${version}/"
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done
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for version in "${versions[@]}"; do
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if [ "${version}" = "template.Debian" ]; then continue; fi # If update.sh is run without arguments, the template directory is included in the list
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debianVariant="${debianVariants[$version]:-$defaultDebianVariant}"
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debianSuite="${debianVariant%%-*}" # "stretch", etc
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