docker-entrypoint.sh

#!/bin/bash
set -xeEuo pipefail

echo "starting up postgres docker image:"
echo "$@"

# check PGDATA directory and create if necessary
if [ \! -d $PGDATA ] || [ \! -O $PGDATA ]
then
    mkdir -p $PGDATA
    chmod 700 $PGDATA
fi

# check database cluster in PGDATA directory and create new db cluster if necessary
if [ \! -s $PGDATA/PG_VERSION ] || ! pg_controldata
then
    POSTGRES_PASSWORD=${POSTGRES_PASSWORD:-"Start1234"}
    initdb -D $PGDATA --locale=de_DE.UTF-8 --lc-messages=en_US.UTF-8 --auth-local=trust --auth-host=md5 --pwfile=<(echo "$POSTGRES_PASSWORD")
    mv $PGDATA/postgresql.conf $PGDATA/postgresql.conf.orig
    cp ~/postgresql.conf.${PG_MAJOR} $PGDATA/postgresql.conf
    mkdir -p $PGDATA/conf.d
    cp ~/00-ina-default.conf $PGDATA/conf.d/
    {
        echo "# allow connections via docker gateway or bridge"
        echo "host    all             all             172.16.0.0/14           md5"
    } >> "$PGDATA/pg_hba.conf"
fi

# show PGDATA version and controldata
echo "PGDATA/PGVERSION=`cat $PGDATA/PG_VERSION`"

# start postgres rdbms now
exec "$@"