From 38fc80f338151fa04ae34d9212c4b98d549aa781 Mon Sep 17 00:00:00 2001
From: Robert Kaussow <mail@geeklabor.de>
Date: Wed, 17 Jul 2019 12:17:40 +0200
Subject: [PATCH] add healthcheck script

---
 Dockerfile.linux.amd64               |  2 +-
 overlay/usr/local/bin/healthcheck.sh | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)
 create mode 100755 overlay/usr/local/bin/healthcheck.sh

diff --git a/Dockerfile.linux.amd64 b/Dockerfile.linux.amd64
index 3f188f5..54af85a 100644
--- a/Dockerfile.linux.amd64
+++ b/Dockerfile.linux.amd64
@@ -34,6 +34,6 @@ VOLUME /var/www/app/themes.local
 EXPOSE 80
 
 ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
-HEALTHCHECK --interval=30s --timeout=10s --retries=5 CMD wget --quiet --tries=1 --spider http://localhost
+HEALTHCHECK --interval=30s --timeout=10s --retries=3 CMD /usr/local/bin/healthcheck.sh
 WORKDIR /var/www/app
 CMD []
diff --git a/overlay/usr/local/bin/healthcheck.sh b/overlay/usr/local/bin/healthcheck.sh
new file mode 100755
index 0000000..13b224f
--- /dev/null
+++ b/overlay/usr/local/bin/healthcheck.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+set -eo pipefail
+URL=http://localhost
+
+wget --quiet --tries=1 --spider ${URL}
+[ $? -ne 0 ] && exit 1
+
+CONTENT=$(wget --quiet -O - ${URL})
+case "$CONTENT" in
+  *Exception*) exit 1 ;;
+esac
+
+exit 0