Add github actions build process

.github/credentials/.gitignore

@@ -0,0 +1,2 @@
+*
+!.gitignore

.github/workflows/build.yml

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+name: Baker
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Extract tag version
+        id: tag_version
+        run: echo "VALUE=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
+
+      - name: Extract git commit hash
+        id: git_commit
+        run: echo "VALUE=$(git rev-list -1 HEAD)" >> $GITHUB_OUTPUT
+
+      - name: Prepare the credentials
+        run: |
+          echo "ELLA_ACCESS_TOKEN=${{ secrets.ELLA_ACCESS_TOKEN }}" > .github/credentials/.env
+
+      - name: build
+        env:
+          VERSION: ${{ steps.tag_version.outputs.VALUE }}
+          GIT_COMMIT: ${{ steps.git_commit.outputs.VALUE }}
+        run: |
+          docker build \
+            --build-arg GIT_COMMIT=${{ env.GIT_COMMIT }} \
+            --build-arg VERSION=${{ env.VERSION }} \
+            --no-cache \
+            --progress=plain \
+            --secret id=_env,src=.github/credentials/.env \
+            -t ellato/baker:${{ env.VERSION }} -t ellato/baker:latest .
+
+          echo ${{ secrets.ELLA_DOCKER_TOKEN }} | docker login -u ellato --password-stdin
+          docker push ellato/baker:${{ env.VERSION }}
+          docker push ellato/baker:latest