Merge pull request #13 from Lotto24/health-check

Add health-check

Author: mqasimsarfraz

Dockerfile

@@ -9,7 +9,7 @@ RUN apk add -v --no-cache bind-tools python py-pip supervisor \
  && pip install --upgrade pip awscli==1.11.183 \
  && apk -v --purge del py-pip
 
-COPY files/startup.sh files/renew_token.sh /
+COPY files/startup.sh files/renew_token.sh files/health-check.sh  /
 COPY files/ecr.ini /etc/supervisor.d/ecr.ini
 COPY files/root /etc/crontabs/root
 
@@ -19,5 +19,7 @@ COPY files/ssl.conf /usr/local/openresty/nginx/conf/ssl.conf
 ENV PORT 5000
 RUN chmod a+x /startup.sh /renew_token.sh
 
+HEALTHCHECK --interval=5s --timeout=5s --retries=3 CMD /health-check.sh
+
 ENTRYPOINT ["/startup.sh"]
 CMD ["/usr/bin/supervisord", "-c", "/etc/supervisord.conf"]

files/health-check.sh

@@ -0,0 +1,2 @@
+#!/bin/sh
+wget localhost:PORT/healthz -q -O - > /dev/null 2>&1

files/nginx.conf

@@ -54,6 +54,11 @@ http {
     add_header 'Docker-Distribution-Api-Version' $docker_distribution_api_version always;
     add_header "Access-Control-Allow-Origin" "*";
 
+    # health check
+    location /healthz {
+            return 200;
+    }
+
     location / {
       set $url        UPSTREAM;
       proxy_pass      $url;

files/startup.sh

@@ -61,6 +61,9 @@ sed -i -e s!SCHEME!"$SCHEME"!g $CONFIG
 sed -i -e s!SSL_INCLUDE!"$SSL_INCLUDE"!g $CONFIG
 sed -i -e s!SSL_LISTEN!"$SSL_LISTEN"!g $CONFIG
 
+# Update health-check
+sed -i -e s!PORT!"$PORT"!g /health-check.sh
+
 # setup ~/.aws directory
 AWS_FOLDER='/root/.aws'
 mkdir -p ${AWS_FOLDER}