Added dev server.

.gitignore

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+.env
+_old

docker-compose.yml

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+services:
+  web:
+    image: glanceapp/glance:latest
+    restart: unless-stopped
+    ports:
+      - 8080:8080
+    volumes:
+      - ./assets:/app/assets
+      - ./config:/app/config
+    environment:
+      TZ: ${TIMEZONE}
+      GITHUB_TOKEN: ${GITHUB_TOKEN}