add parts for odcker build and gitea action build

.gitea/workflows/README.md

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+# Gitea Actions Workflows
+
+This directory contains Gitea Actions workflows for automated builds and releases.
+
+## Build and Release Workflow
+
+The `build-release.yml` workflow automatically builds Docker images and attaches them to Gitea releases.
+
+### Setup
+
+1. **Enable Gitea Actions**: Ensure Actions are enabled on your Gitea instance (Settings → Actions)
+
+2. **Configure Token**: The workflow uses `secrets.GITHUB_TOKEN` which Gitea provides automatically. If your Gitea version uses a different token name, you may need to:
+   - Update the workflow to use `secrets.GITEA_TOKEN` instead
+   - Or create a custom token secret in your repository settings
+
+3. **API URL**: The workflow uses `github.api_url` which Gitea Actions should provide. If you encounter issues, you may need to manually set the Gitea API URL in the workflow.
+
+### Usage
+
+**Automatic Release on Tag Push:**
+```bash
+git tag v1.0.0
+git push origin v1.0.0
+```
+
+The workflow will:
+1. Build a Docker image tagged with the version
+2. Save it as a compressed tar file
+3. Create or update a Gitea release
+4. Attach the tar file to the release
+
+**Manual Trigger:**
+You can also trigger the workflow manually from the Gitea Actions UI. The image will be saved as an artifact (not attached to a release).
+
+### Loading the Image
+
+After downloading the `.tar.gz` file from a release:
+
+```bash
+# Load the image
+docker load < automatic-linkedin-answer-ai-v1.0.0.tar.gz
+
+# Verify it's loaded
+docker images | grep automatic-linkedin-answer-ai
+
+# Run the container
+docker run -it \
+  -v $(pwd)/config.yaml:/app/config.yaml \
+  -v $(pwd)/docs:/app/docs \
+  automatic-linkedin-answer-ai:v1.0.0
+```
+
+### Troubleshooting
+
+**Workflow fails with authentication errors:**
+- Check that Actions are enabled on your Gitea instance
+- Verify the token secret is available (should be automatic with Gitea Actions)
+- If using a self-hosted Gitea, ensure the API URL is accessible from the runner
+
+**Release not created:**
+- Ensure you're pushing a tag that matches the pattern `v*` (e.g., `v1.0.0`)
+- Check the workflow logs for specific error messages
+- Verify you have write permissions to the repository
+
+**Image too large:**
+- The workflow compresses the image with gzip
+- Consider using multi-stage builds in the Dockerfile to reduce image size
+- You may need to adjust Gitea's upload size limits if the image is very large

.gitea/workflows/build-release.yml

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+name: Build Docker Image and Release
+
+on:
+  push:
+    tags:
+      - 'v*'  # Triggers on version tags like v1.0.0
+  workflow_dispatch:  # Allows manual triggering
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write  # Required to create/update releases
+    
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Extract version from tag
+        id: tag_version
+        run: |
+          if [[ "${{ github.ref }}" == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/}
+            echo "version=$VERSION" >> $GITHUB_OUTPUT
+          else
+            VERSION="latest-$(date +%Y%m%d-%H%M%S)"
+            echo "version=$VERSION" >> $GITHUB_OUTPUT
+          fi
+
+      - name: Build Docker image
+        run: |
+          docker build -t automatic-linkedin-answer-ai:${{ steps.tag_version.outputs.version }} \
+                       -t automatic-linkedin-answer-ai:latest .
+
+      - name: Save Docker image as tar
+        run: |
+          docker save automatic-linkedin-answer-ai:${{ steps.tag_version.outputs.version }} \
+            | gzip > automatic-linkedin-answer-ai-${{ steps.tag_version.outputs.version }}.tar.gz
+          ls -lh automatic-linkedin-answer-ai-*.tar.gz
+
+      - name: Create or update release (Gitea API)
+        if: startsWith(github.ref, 'refs/tags/')
+        run: |
+          TAG_NAME=${GITHUB_REF#refs/tags/}
+          RELEASE_NAME="Release $TAG_NAME"
+          IMAGE_FILE="automatic-linkedin-answer-ai-$TAG_NAME.tar.gz"
+          
+          # Check if release exists
+          RELEASE_ID=$(curl -s -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+            "${{ github.api_url }}/repos/${{ github.repository }}/releases/tags/$TAG_NAME" \
+            | grep -o '"id":[0-9]*' | head -1 | cut -d':' -f2)
+          
+          if [ -z "$RELEASE_ID" ]; then
+            # Create new release
+            curl -X POST \
+              -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+              -H "Content-Type: application/json" \
+              -d "{\"tag_name\":\"$TAG_NAME\",\"name\":\"$RELEASE_NAME\",\"draft\":false,\"prerelease\":false}" \
+              "${{ github.api_url }}/repos/${{ github.repository }}/releases" > /tmp/release.json
+            
+            RELEASE_ID=$(grep -o '"id":[0-9]*' /tmp/release.json | head -1 | cut -d':' -f2)
+          fi
+          
+          # Upload asset
+          curl -X POST \
+            -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+            -H "Content-Type: application/gzip" \
+            --data-binary "@$IMAGE_FILE" \
+            "${{ github.api_url }}/repos/${{ github.repository }}/releases/$RELEASE_ID/assets?name=$IMAGE_FILE"
+
+      - name: Upload image artifact (for manual builds)
+        if: github.event_name == 'workflow_dispatch'
+        uses: actions/upload-artifact@v4
+        with:
+          name: docker-image
+          path: automatic-linkedin-answer-ai-*.tar.gz
+          retention-days: 30