add docker build and github action

.github/workflows/release.yml

@@ -0,0 +1,42 @@
+name: Release Firmware
+
+on:
+  push:
+    branches: [main]
+    tags: ['*']
+
+jobs:
+  build-and-release:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Build firmware
+        run: docker build -t esp-scope-firmware .
+
+      - name: Extract binary
+        run: docker run --rm esp-scope-firmware cat /workspace/build/esp-scope.bin > esp-scope.bin
+
+      - name: Set release tag
+        id: tag
+        run: |
+          if [[ "${GITHUB_REF}" == refs/tags/* ]]; then
+            echo "tag=${GITHUB_REF#refs/tags/}" >> "$GITHUB_OUTPUT"
+            echo "prerelease=false" >> "$GITHUB_OUTPUT"
+          else
+            echo "tag=latest" >> "$GITHUB_OUTPUT"
+            echo "prerelease=true" >> "$GITHUB_OUTPUT"
+          fi
+
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ steps.tag.outputs.tag }}
+          prerelease: ${{ steps.tag.outputs.prerelease }}
+          files: esp-scope.bin