Enable automatic reloading by mounting local 'src' directory and passing the --poll flag to serve command.

Author: tdonohue

Dockerfile

@@ -30,4 +30,5 @@ EXPOSE 4000
 # On startup, run this command to start application in dev mode
 ENTRYPOINT [ "npm", "run", "serve" ]
 # By default set host to 0.0.0.0 to listen/accept connections from all IP addresses.
-CMD ["--", "--host 0.0.0.0"]
+# Poll for changes every 5 seconds (if any detected, app will rebuild/restart)
+CMD ["--", "--host 0.0.0.0", "--poll 5000"]

docker/docker-compose.yml

@@ -38,3 +38,7 @@ services:
       target: 4000
     - published: 9876
       target: 9876
+    volumes:
+    # Mount the local 'src' directory to the '/app' directory on the container.
+    # Allows the UI to "watch" this directory for changes and reload/rebuild when changes are detected.
+    - ../src:/app/src