Added Docker container and compose definitions to make development easier

docker-dev.yml

@@ -0,0 +1,32 @@
+services:
+  app:
+    build:
+      context: .
+      dockerfile: Dockerfile.dev
+    command: make run BUILD_DIR=/tmp
+    ports:
+      - "2830:2830"
+    volumes:
+      - .:/app # Mounts local directory for hot-reloading/live edits
+      - go-modules:/go/pkg/mod # Caches Go modules on host
+      # Mount the compiled static assets generated by Grunt
+      - static-assets:/app/public
+    environment:
+      - APP_ENV=development
+  assets:
+    build:
+      context: .
+      dockerfile: Dockerfile.grunt
+    # Override CMD to run watch mode during local dev
+    command: npm run grunt watch
+    volumes:
+      # Mount host code so Grunt detects file changes in real time
+      - .:/var/www/html
+      # Preserve container node_modules from being overwritten by host
+      - /var/www/html/node_modules
+      # Output compiled assets into the shared volume
+      - static-assets:/var/www/html/public
+
+volumes:
+  go-modules:
+  static-assets: