Merge pull request #288 from WatWowMap/docker-update

docs: Update docker compose + documentation

Author: TurtIeSocks

docker-compose.example.yml

@@ -1,21 +1,25 @@
-version: '3.2'
-
-services:
-  mapjs:
-    build: .
-    restart: unless-stopped
-    working_dir: /app
-    command:
-      - sh
-      - -c
-      - |
-        npm install
-        npm start
-    volumes:
-      - .:/app
-      #- static:/static
-    ports:
-      - "8080:8080"
-
-#volumes:
-#  static:
+version: '3.2'
+
+services:
+  mapjs:
+    image: node:12
+    restart: unless-stopped
+    working_dir: /app
+    environment:
+      HEALTHCHECK_SECRET: "some_super_secret_value"
+    healthcheck:
+      test: "curl -fH \"Healthcheck-Secret: $HEALTHCHECK_SECRET\" http://localhost:8080 || exit 1"
+    command:
+      - sh
+      - -c
+      - |
+        npm run update
+        npm start
+    volumes:
+      - .:/app
+      #- static:/static
+    ports:
+      - "8080:8080"
+
+#volumes:
+#  static:

docs/install/docker.md

@@ -18,7 +18,7 @@
     cp docker-compose.example.yml docker-compose.yml
     ```
 
-1. Fill out your docker-compose.yml file
+1. Fill out your docker-compose.yml file. Change your `HEALTHCHECK_SECRET` variable.
 
     ```sh
     vi docker-compose.yml