Refactor listen_addresses to be set in the sample file, and make the …

…sample file easier to overwrite

Dockerfile.template

@@ -36,6 +36,11 @@ RUN apt-get update \
 		postgresql-contrib-$PG_MAJOR=$PG_VERSION \
 	&& rm -rf /var/lib/apt/lists/*
 
+# make the sample config easier to munge (and "correct by default")
+RUN mv -v /usr/share/postgresql/$PG_MAJOR/postgresql.conf.sample /usr/share/postgresql/ \
+	&& ln -sv ../postgresql.conf.sample /usr/share/postgresql/$PG_MAJOR/ \
+	&& sed -ri "s!^#?(listen_addresses)\s*=\s*\S+.*!\1 = '*'!" /usr/share/postgresql/postgresql.conf.sample
+
 RUN mkdir -p /var/run/postgresql && chown -R postgres /var/run/postgresql
 
 ENV PATH /usr/lib/postgresql/$PG_MAJOR/bin:$PATH

docker-entrypoint.sh

@@ -1,10 +1,9 @@
 #!/bin/bash
 set -e
 
-set_listen_addresses() {
-	sedEscapedValue="$(echo "$1" | sed 's/[\/&]/\\&/g')"
-	sed -ri "s/^#?(listen_addresses\s*=\s*)\S+/\1'$sedEscapedValue'/" "$PGDATA/postgresql.conf"
-}
+if [ "${1:0:1}" = '-' ]; then
+	set -- postgres "$@"
+fi
 
 if [ "$1" = 'postgres' ]; then
 	mkdir -p "$PGDATA"
@@ -88,7 +87,6 @@ if [ "$1" = 'postgres' ]; then
 		done
 
 		gosu postgres pg_ctl -D "$PGDATA" -m fast -w stop
-		set_listen_addresses '*'
 
 		echo
 		echo 'PostgreSQL init process complete; ready for start up.'