feat: Add Docker workflows for building, testing, and deploying the application; include Dockerfile for image creation

.gitea/workflows/deploy.yml

@@ -0,0 +1,21 @@
+name: Deploy to Server
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: SSH and deploy
+        uses: appleboy/ssh-action@master
+        with:
+          host: ${{ secrets.SSH_HOST }}
+          username: ${{ secrets.SSH_USERNAME }}
+          key: ${{ secrets.SSH_PRIVATE_KEY }}
+          script: |
+            docker pull ${{ secrets.GITEA_REGISTRY }}/${{ secrets.GITEA_USERNAME }}/calminer:latest
+            docker stop calminer || true
+            docker rm calminer || true
+            docker run -d --name calminer -p 8000:8000 ${{ secrets.GITEA_REGISTRY }}/${{ secrets.GITEA_USERNAME }}/calminer:latest