add auto deploy workflow

.github/workflows/deploy.yml

@@ -0,0 +1,26 @@
+name: Deployment
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  deploy:
+    runs-on: self-hosted
+    environment:
+      name: production
+      url: https://robotics-club.utm.utoronto.ca/
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
+      - name: compose build
+        run: docker compose build
+
+      - name: compose up
+        run: docker compose up -d
+
+      - name: cleanup
+        run: |
+          docker system prune -a -f