From fc617a2de00dd7357ddb69c87475b3ee771cc6fb Mon Sep 17 00:00:00 2001
From: Guillaume HUSTA <guillaume.husta@gmail.com>
Date: Mon, 13 Aug 2018 13:21:35 +0200
Subject: [PATCH 1/3] FIX #2 : Add HEALTHCHECK in Dockerfile

---
 CHANGELOG.md       |  3 +++
 Dockerfile         |  4 ++++
 docker-healthcheck | 21 +++++++++++++++++++++
 3 files changed, 28 insertions(+)
 create mode 100644 docker-healthcheck

diff --git a/CHANGELOG.md b/CHANGELOG.md
index aecf667..9a64920 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Change Log
 
+## 2.2.1 (2018-08-13)
+Add HEALTHCHECK in Dockerfile (#2).
+
 ## 2.2 (2017-10-06)
 Upgrade to PostgreSQL 10.  
 See https://www.postgresql.org/about/news/1786/ 
diff --git a/Dockerfile b/Dockerfile
index 3f02f29..b297d3d 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -10,3 +10,7 @@ ADD scripts/*.sql /docker-entrypoint-initdb.d/
 
 # Copier les scripts d'init dans : 
 #ADD scripts/*.sh /docker-entrypoint-initdb.d/
+
+COPY docker-healthcheck /usr/local/bin/
+
+HEALTHCHECK CMD ["docker-healthcheck"]
diff --git a/docker-healthcheck b/docker-healthcheck
new file mode 100644
index 0000000..2994167
--- /dev/null
+++ b/docker-healthcheck
@@ -0,0 +1,21 @@
+#!/bin/bash
+set -eo pipefail
+
+host="$(hostname -i || echo '127.0.0.1')"
+user="${POSTGRES_USER:-postgres}"
+db="${POSTGRES_DB:-$POSTGRES_USER}"
+export PGPASSWORD="${POSTGRES_PASSWORD:-}"
+
+args=(
+	# force postgres to not use the local unix socket (test "external" connectibility)
+	--host "$host"
+	--username "$user"
+	--dbname "$db"
+	--quiet --no-align --tuples-only
+)
+
+if select="$(echo 'SELECT 1' | psql "${args[@]}")" && [ "$select" = '1' ]; then
+	exit 0
+fi
+
+exit 1

From b4d57db5f7065f1561d5cb8f0007b4eac40326d9 Mon Sep 17 00:00:00 2001
From: Guillaume HUSTA <guillaume.husta@gmail.com>
Date: Mon, 13 Aug 2018 13:36:26 +0200
Subject: [PATCH 2/3] Force EOL = LF for docker-healthcheck (shell script)

---
 .gitattributes | 3 +++
 1 file changed, 3 insertions(+)
 create mode 100644 .gitattributes

diff --git a/.gitattributes b/.gitattributes
new file mode 100644
index 0000000..f36af62
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,3 @@
+*                       text=auto
+*.sh                    text eol=lf
+docker-healthcheck      text eol=lf

From 4db0778093684b362fda40204616d8e65f4662e7 Mon Sep 17 00:00:00 2001
From: Guillaume HUSTA <guillaume.husta@gmail.com>
Date: Mon, 13 Aug 2018 14:03:02 +0200
Subject: [PATCH 3/3] FIX #2 : Check Healthcheck config in Docker image

---
 .travis.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.travis.yml b/.travis.yml
index 5854e45..27e6863 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -10,6 +10,7 @@ install:
 
 script:
   - docker build --tag ghusta/postgres-world-db .
+  - docker inspect --format="{{json .Config.Healthcheck}}" ghusta/postgres-world-db
 
 after_success:
   - docker image ls