HOMS-164 Add postgresql-client for check DB availability

Dockerfile

@@ -1,7 +1,7 @@
 FROM ruby:2.2.4
 
-COPY ./entrypoint.sh /
-RUN chmod +x /entrypoint.sh
+COPY ./entrypoint.sh ./wait_for_postgres.sh /
+RUN chmod +x /entrypoint.sh /wait_for_postgres.sh
 
 # below come instructions for Hydra OMS deployment
 WORKDIR /opt
@@ -10,7 +10,8 @@ RUN apt-get update \
  && apt-get install -y git \
            libpq-dev \
            nodejs \
-           libqtwebkit-dev
+           libqtwebkit-dev \
+           postgresql-client
 
 
 COPY Gemfile Gemfile.lock Rakefile config.ru /opt/homs/

docker-compose.yml

@@ -37,6 +37,7 @@ services:
       - 8080:8080
     depends_on:
       - db_activiti
+    entrypoint: "bash -lc '/wait_for_postgres.sh db_activiti && /entrypoint_ah.sh'"
     networks:
       - custom_network
   homs:
@@ -58,6 +59,7 @@ services:
     depends_on:
       - db_homs
       - activiti_homs
+    entrypoint: "bash -lc '/wait_for_postgres.sh db_homs && /entrypoint.sh'"
     ports:
       - 3000:3000
     networks:

wait_for_postgres.sh

@@ -0,0 +1,13 @@
+#!/bin/bash
+
+set -e
+
+host="$1"
+
+until psql -h "$host" -U "postgres" -c '\q'; do
+  >&2 echo "Postgres is unavailable - sleeping"
+  sleep 1
+done
+
+>&2 echo "Postgres is up"
+exit 0