Add alpine postgres variant.

.travis.yml

@@ -3,8 +3,11 @@ services: docker
 
 env:
   - VERSION=9.6
+  - VERSION=9.6 VARIANT=alpine
   - VERSION=9.5
+  - VERSION=9.5 VARIANT=alpine
   - VERSION=9.4
+  - VERSION=9.4 VARIANT=alpine
   - VERSION=9.3
   - VERSION=9.2
   - VERSION=9.1
@@ -14,8 +17,8 @@ install:
 
 before_script:
   - env | sort
-  - cd "$VERSION"
-  - image="postgres:$VERSION"
+  - cd "$VERSION/$VARIANT"
+  - image="postgres:${VERSION}${VARIANT:+-${VARIANT}}"
 
 script:
   - docker build -t "$image" .

9.4/alpine/Dockerfile

@@ -0,0 +1,14 @@
+FROM alpine:3.3
+
+RUN apk update && apk add su-exec postgresql && rm -rf /var/cache/apk/*
+
+ENV LANG en_US.utf8
+ENV PGDATA /var/lib/postgresql/data
+VOLUME /var/lib/postgresql/data
+
+COPY docker-entrypoint.sh /
+
+ENTRYPOINT ["/docker-entrypoint.sh"]
+
+EXPOSE 5432
+CMD ["postgres"]

9.4/alpine/docker-entrypoint.sh

@@ -0,0 +1,96 @@
+#!/bin/sh
+set -e
+
+if [ "${1:0:1}" = '-' ]; then
+	set -- postgres "$@"
+fi
+
+if [ "$1" = 'postgres' ]; then
+	mkdir -p "$PGDATA"
+	chmod 700 "$PGDATA"
+	chown -R postgres "$PGDATA"
+
+	mkdir -p /run/postgresql
+	chmod g+s /run/postgresql
+	chown -R postgres /run/postgresql
+
+	# look specifically for PG_VERSION, as it is expected in the DB dir
+	if [ ! -s "$PGDATA/PG_VERSION" ]; then
+		eval "su-exec postgres initdb $POSTGRES_INITDB_ARGS"
+
+		# check password first so we can output the warning before postgres
+		# messes it up
+		if [ "$POSTGRES_PASSWORD" ]; then
+			pass="PASSWORD '$POSTGRES_PASSWORD'"
+			authMethod=md5
+		else
+			# The - option suppresses leading tabs but *not* spaces. :)
+			cat >&2 <<-'EOWARN'
+				****************************************************
+				WARNING: No password has been set for the database.
+				         This will allow anyone with access to the
+				         Postgres port to access your database. In
+				         Docker's default configuration, this is
+				         effectively any other container on the same
+				         system.
+
+				         Use "-e POSTGRES_PASSWORD=password" to set
+				         it in "docker run".
+				****************************************************
+			EOWARN
+
+			pass=
+			authMethod=trust
+		fi
+
+		{ echo; echo "host all all 0.0.0.0/0 $authMethod"; } >> "$PGDATA/pg_hba.conf"
+
+		# internal start of server in order to allow set-up using psql-client
+		# does not listen on external TCP/IP and waits until start finishes
+		su-exec postgres pg_ctl -D "$PGDATA" \
+			-o "-c listen_addresses='localhost'" \
+			-w start
+
+		: ${POSTGRES_USER:=postgres}
+		: ${POSTGRES_DB:=$POSTGRES_USER}
+		export POSTGRES_USER POSTGRES_DB
+
+		if [ "$POSTGRES_DB" != 'postgres' ]; then
+			psql -v ON_ERROR_STOP=1 --username postgres <<-EOSQL
+				CREATE DATABASE "$POSTGRES_DB" ;
+			EOSQL
+			echo
+		fi
+
+		if [ "$POSTGRES_USER" = 'postgres' ]; then
+			op='ALTER'
+		else
+			op='CREATE'
+		fi
+		psql -v ON_ERROR_STOP=1 --username postgres <<-EOSQL
+			$op USER "$POSTGRES_USER" WITH SUPERUSER $pass ;
+		EOSQL
+		echo
+
+		echo
+		for f in /docker-entrypoint-initdb.d/*; do
+			case "$f" in
+				*.sh)     echo "$0: running $f"; . "$f" ;;
+				*.sql)    echo "$0: running $f"; psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < "$f"; echo ;;
+				*.sql.gz) echo "$0: running $f"; gunzip -c "$f" | psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB"; echo ;;
+				*)        echo "$0: ignoring $f" ;;
+			esac
+			echo
+		done
+
+		su-exec postgres pg_ctl -D "$PGDATA" -m fast -w stop
+
+		echo
+		echo 'PostgreSQL init process complete; ready for start up.'
+		echo
+	fi
+
+	exec su-exec postgres "$@"
+fi
+
+exec "$@"

9.5/alpine/Dockerfile

@@ -0,0 +1,14 @@
+FROM alpine:3.4
+
+RUN apk update && apk add su-exec postgresql && rm -rf /var/cache/apk/*
+
+ENV LANG en_US.utf8
+ENV PGDATA /var/lib/postgresql/data
+VOLUME /var/lib/postgresql/data
+
+COPY docker-entrypoint.sh /
+
+ENTRYPOINT ["/docker-entrypoint.sh"]
+
+EXPOSE 5432
+CMD ["postgres"]

9.5/alpine/docker-entrypoint.sh

@@ -0,0 +1,96 @@
+#!/bin/sh
+set -e
+
+if [ "${1:0:1}" = '-' ]; then
+	set -- postgres "$@"
+fi
+
+if [ "$1" = 'postgres' ]; then
+	mkdir -p "$PGDATA"
+	chmod 700 "$PGDATA"
+	chown -R postgres "$PGDATA"
+
+	mkdir -p /run/postgresql
+	chmod g+s /run/postgresql
+	chown -R postgres /run/postgresql
+
+	# look specifically for PG_VERSION, as it is expected in the DB dir
+	if [ ! -s "$PGDATA/PG_VERSION" ]; then
+		eval "su-exec postgres initdb $POSTGRES_INITDB_ARGS"
+
+		# check password first so we can output the warning before postgres
+		# messes it up
+		if [ "$POSTGRES_PASSWORD" ]; then
+			pass="PASSWORD '$POSTGRES_PASSWORD'"
+			authMethod=md5
+		else
+			# The - option suppresses leading tabs but *not* spaces. :)
+			cat >&2 <<-'EOWARN'
+				****************************************************
+				WARNING: No password has been set for the database.
+				         This will allow anyone with access to the
+				         Postgres port to access your database. In
+				         Docker's default configuration, this is
+				         effectively any other container on the same
+				         system.
+
+				         Use "-e POSTGRES_PASSWORD=password" to set
+				         it in "docker run".
+				****************************************************
+			EOWARN
+
+			pass=
+			authMethod=trust
+		fi
+
+		{ echo; echo "host all all 0.0.0.0/0 $authMethod"; } >> "$PGDATA/pg_hba.conf"
+
+		# internal start of server in order to allow set-up using psql-client
+		# does not listen on external TCP/IP and waits until start finishes
+		su-exec postgres pg_ctl -D "$PGDATA" \
+			-o "-c listen_addresses='localhost'" \
+			-w start
+
+		: ${POSTGRES_USER:=postgres}
+		: ${POSTGRES_DB:=$POSTGRES_USER}
+		export POSTGRES_USER POSTGRES_DB
+
+		if [ "$POSTGRES_DB" != 'postgres' ]; then
+			psql -v ON_ERROR_STOP=1 --username postgres <<-EOSQL
+				CREATE DATABASE "$POSTGRES_DB" ;
+			EOSQL
+			echo
+		fi
+
+		if [ "$POSTGRES_USER" = 'postgres' ]; then
+			op='ALTER'
+		else
+			op='CREATE'
+		fi
+		psql -v ON_ERROR_STOP=1 --username postgres <<-EOSQL
+			$op USER "$POSTGRES_USER" WITH SUPERUSER $pass ;
+		EOSQL
+		echo
+
+		echo
+		for f in /docker-entrypoint-initdb.d/*; do
+			case "$f" in
+				*.sh)     echo "$0: running $f"; . "$f" ;;
+				*.sql)    echo "$0: running $f"; psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < "$f"; echo ;;
+				*.sql.gz) echo "$0: running $f"; gunzip -c "$f" | psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB"; echo ;;
+				*)        echo "$0: ignoring $f" ;;
+			esac
+			echo
+		done
+
+		su-exec postgres pg_ctl -D "$PGDATA" -m fast -w stop
+
+		echo
+		echo 'PostgreSQL init process complete; ready for start up.'
+		echo
+	fi
+
+	exec su-exec postgres "$@"
+fi
+
+exec "$@"

9.6/alpine/Dockerfile

@@ -0,0 +1,15 @@
+FROM alpine:3.4
+
+RUN echo "@edge http://nl.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories && \
+    apk update && apk add su-exec postgresql@edge && rm -rf /var/cache/apk/*
+
+ENV LANG en_US.utf8
+ENV PGDATA /var/lib/postgresql/data
+VOLUME /var/lib/postgresql/data
+
+COPY docker-entrypoint.sh /
+
+ENTRYPOINT ["/docker-entrypoint.sh"]
+
+EXPOSE 5432
+CMD ["postgres"]

9.6/alpine/docker-entrypoint.sh

@@ -0,0 +1,96 @@
+#!/bin/sh
+set -e
+
+if [ "${1:0:1}" = '-' ]; then
+	set -- postgres "$@"
+fi
+
+if [ "$1" = 'postgres' ]; then
+	mkdir -p "$PGDATA"
+	chmod 700 "$PGDATA"
+	chown -R postgres "$PGDATA"
+
+	mkdir -p /run/postgresql
+	chmod g+s /run/postgresql
+	chown -R postgres /run/postgresql
+
+	# look specifically for PG_VERSION, as it is expected in the DB dir
+	if [ ! -s "$PGDATA/PG_VERSION" ]; then
+		eval "su-exec postgres initdb $POSTGRES_INITDB_ARGS"
+
+		# check password first so we can output the warning before postgres
+		# messes it up
+		if [ "$POSTGRES_PASSWORD" ]; then
+			pass="PASSWORD '$POSTGRES_PASSWORD'"
+			authMethod=md5
+		else
+			# The - option suppresses leading tabs but *not* spaces. :)
+			cat >&2 <<-'EOWARN'
+				****************************************************
+				WARNING: No password has been set for the database.
+				         This will allow anyone with access to the
+				         Postgres port to access your database. In
+				         Docker's default configuration, this is
+				         effectively any other container on the same
+				         system.
+
+				         Use "-e POSTGRES_PASSWORD=password" to set
+				         it in "docker run".
+				****************************************************
+			EOWARN
+
+			pass=
+			authMethod=trust
+		fi
+
+		{ echo; echo "host all all 0.0.0.0/0 $authMethod"; } >> "$PGDATA/pg_hba.conf"
+
+		# internal start of server in order to allow set-up using psql-client
+		# does not listen on external TCP/IP and waits until start finishes
+		su-exec postgres pg_ctl -D "$PGDATA" \
+			-o "-c listen_addresses='localhost'" \
+			-w start
+
+		: ${POSTGRES_USER:=postgres}
+		: ${POSTGRES_DB:=$POSTGRES_USER}
+		export POSTGRES_USER POSTGRES_DB
+
+		if [ "$POSTGRES_DB" != 'postgres' ]; then
+			psql -v ON_ERROR_STOP=1 --username postgres <<-EOSQL
+				CREATE DATABASE "$POSTGRES_DB" ;
+			EOSQL
+			echo
+		fi
+
+		if [ "$POSTGRES_USER" = 'postgres' ]; then
+			op='ALTER'
+		else
+			op='CREATE'
+		fi
+		psql -v ON_ERROR_STOP=1 --username postgres <<-EOSQL
+			$op USER "$POSTGRES_USER" WITH SUPERUSER $pass ;
+		EOSQL
+		echo
+
+		echo
+		for f in /docker-entrypoint-initdb.d/*; do
+			case "$f" in
+				*.sh)     echo "$0: running $f"; . "$f" ;;
+				*.sql)    echo "$0: running $f"; psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB" < "$f"; echo ;;
+				*.sql.gz) echo "$0: running $f"; gunzip -c "$f" | psql -v ON_ERROR_STOP=1 --username "$POSTGRES_USER" --dbname "$POSTGRES_DB"; echo ;;
+				*)        echo "$0: ignoring $f" ;;
+			esac
+			echo
+		done
+
+		su-exec postgres pg_ctl -D "$PGDATA" -m fast -w stop
+
+		echo
+		echo 'PostgreSQL init process complete; ready for start up.'
+		echo
+	fi
+
+	exec su-exec postgres "$@"
+fi
+
+exec "$@"