feat(docker-entrypoint): read username and password from file

These files are injected in from kubernetes secrets

Author: Matthew Fisher

.gitignore

@@ -0,0 +1 @@
+contrib/ci/tmp

contrib/ci/test.sh

@@ -5,6 +5,11 @@ set -x
 
 JOB=$(docker run -d $1)
 # wait for postgres to boot
+CURRENT_DIR=$(cd $(dirname $0); pwd)
+mkdir -p $CURRENT_DIR/tmp
+echo "testuser" > $CURRENT_DIR/tmp/user
+echo "icanttellyou" > $CURRENT_DIR/tmp/password
+JOB=$(docker run -dv $CURRENT_DIR/tmp:/var/run/secrets/deis/database/creds $1)
 sleep 10
 docker exec $JOB is_master
 docker rm -f $JOB

rootfs/docker-entrypoint.sh

@@ -1,6 +1,7 @@
 #!/bin/bash
 #
-# Copied from https://github.com/docker-library/postgres/blob/ec5ce80ca914e02c2d5eb9fde424039d4cee032e/9.4/docker-entrypoint.sh
+# Originally copied and modified from
+# https://github.com/docker-library/postgres/blob/ec5ce80ca914e02c2d5eb9fde424039d4cee032e/9.4/docker-entrypoint.sh
 #
 set -e
 
@@ -9,6 +10,9 @@ set_listen_addresses() {
 	sed -ri "s/^#?(listen_addresses\s*=\s*)\S+/\1'$sedEscapedValue'/" "$PGDATA/postgresql.conf"
 }
 
+POSTGRES_USER="$(cat /var/run/secrets/deis/database/creds/user)"
+POSTGRES_PASSWORD="$(cat /var/run/secrets/deis/database/creds/password)"
+
 if [ "$1" = 'postgres' ]; then
 	mkdir -p "$PGDATA"
 	chmod 700 "$PGDATA"