feat(deployment) Allow overriding service host and ports with env variables (#930)

* Add proxy changes

* Add web changes

* Add microservices changes

* Add examples

* Add header comment to nginx config

* Use URLs instead of host and port

nginx/Dockerfile

@@ -3,6 +3,7 @@ FROM docker.io/nginxinc/nginx-unprivileged:latest
 COPY LICENSE /licenses/LICENSE.txt
 COPY LICENSE /LICENSE
 
-COPY nginx.conf "/etc/nginx/nginx.conf"
+COPY nginx.conf "/etc/nginx/nginx.conf.template"
+COPY start.sh /start.sh
 
-CMD nginx -g "daemon off;"
+CMD /start.sh

nginx/nginx.conf

@@ -1,5 +1,4 @@
-
-
+# NOTE: This file is generated on startup. See /start.sh
 worker_processes auto;
 error_log /var/log/nginx/error.log;
 pid /tmp/nginx.pid;
@@ -62,7 +61,7 @@ http {
 
       rewrite /api/(.*) /$1 break;
 
-      proxy_pass http://immich-server:3001;
+      proxy_pass $IMMICH_SERVER_URL;
     }
 
     location / {
@@ -87,7 +86,7 @@ http {
       proxy_set_header Connection "upgrade";
       proxy_set_header Host $host;
 
-      proxy_pass http://immich-web:3000;
+      proxy_pass $IMMICH_WEB_URL;
     }
   }
-}
+}

nginx/start.sh

@@ -0,0 +1,9 @@
+#! /bin/bash
+set -e
+
+export IMMICH_WEB_URL=${IMMICH_WEB_URL:-http://immich-web:3000}
+export IMMICH_SERVER_URL=${IMMICH_SERVER_URL:-http://immich-server:3001}
+
+envsubst '$IMMICH_WEB_URL $IMMICH_SERVER_URL' < /etc/nginx/nginx.conf.template > /etc/nginx/nginx.conf
+
+exec nginx -g 'daemon off;'