Added HEALTHCHECK_LISTEN

Author: ironhalik

README.md

@@ -46,5 +46,6 @@ The above will get the password from AWS Secret Manager secret named `staging`,
 - `STATS_PORT=8080` port the stats endpoint listens at. Defaults to 8080.
 - `HEALTHCHECK=/health` enables simple healthcheck endpoint at the defined path, accessible from 127.0.0.1 only. Think Docker healthcheck-cmd `curl -sSf 127.0.0.1:8080/health`
 - `HEALTHCHECK_PORT=8080` port the healthcheck listens at. Defaults to 8080.
+- `HEALTHCHECK_LISTEN=127.0.0.1` IP address the healthcheck listens on. Defaults to 127.0.0.1.
 
 ...and some others. See the code.

docker-compose.yml

@@ -20,6 +20,7 @@ services:
       - MICROCACHE=true
       - DEBUG=true
       - HEALTHCHECK=/health
+      - HEALTHCHECK_LISTEN=0.0.0.0
       - STATS=/stats
 
   service_a:

templates/site.conf.j2

@@ -12,11 +12,11 @@ limit_req_zone $binary_remote_addr zone=flood:10m rate={{ env('FLOOD_RATE', "5")
 {%- if STATS or HEALTHCHECK %}
 server {
   {%- if STATS_PORT %}
-  listen 127.0.0.1:{{ env('STATS_PORT', '8080') }};
+  listen {{ env('HEALTHCHECK_LISTEN', '127.0.0.1') }}:{{ env('STATS_PORT', '8080') }};
   {%- elif HEALTHCHECK_PORT %}
-  listen 127.0.0.1:{{ env('HEALTHCHECK_PORT', '8080') }};
+  listen {{ env('HEALTHCHECK_LISTEN', '127.0.0.1') }}:{{ env('HEALTHCHECK_PORT', '8080') }};
   {%- else %}
-  listen 127.0.0.1:8080;
+  listen {{ env('HEALTHCHECK_LISTEN', '127.0.0.1') }}:8080;
   {% endif %}
   access_log  off;
   {% if STATS %}