feat: add RunPod Docker template with automated build workflow

- Add Dockerfile with minimal setup (supervisor, tailscale)
- Add start.sh bootstrap script for container initialization
- Add Gitea workflow for automated Docker image builds
- Add comprehensive RUNPOD_TEMPLATE.md documentation
- Add bootstrap-venvs.sh for Python venv health checks

This enables deployment of the AI orchestrator on RunPod using:
- Minimal Docker image (~2-3GB) for fast deployment
- Network volume for models and data persistence (~80-200GB)
- Automated builds on push to main or version tags
- Full Tailscale VPN integration
- Supervisor process management

.gitea/workflows/build-docker-image.yml

@@ -0,0 +1,58 @@
+name: Build and Push RunPod Docker Image
+
+on:
+  push:
+    branches:
+      - main
+    tags:
+      - 'v*'
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Log in to Docker Hub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Extract metadata (tags, labels)
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ secrets.DOCKER_USERNAME }}/runpod-ai-orchestrator
+          tags: |
+            type=ref,event=branch
+            type=ref,event=pr
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=sha,prefix={{branch}}-
+            type=raw,value=latest,enable={{is_default_branch}}
+
+      - name: Build and push Docker image
+        uses: docker/build-push-action@v5
+        with:
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+
+      - name: Image digest
+        run: echo ${{ steps.meta.outputs.digest }}