Add Enigma BBS deployment files

.gitea/workflows/build.yaml

@@ -0,0 +1,46 @@
+name: Build and Push Docker Image
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'Dockerfile'
+      - '.gitea/**/*.yaml'
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        
+      - name: Log in to Container Registry
+        uses: docker/login-action@v3
+        with:
+          registry: git.giaco.net
+          username: ${{ vars.GIT_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+          
+      - name: Extract metadata
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: git.giaco.net/enigma/enigmabbs
+          tags: |
+            type=ref,event=branch
+            type=raw,value=latest
+          
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max