Stop using cargo internal API, too complicated. Switch to programmatically parsing metadata output. Add CI (untested, probably doesn't work), create dockerfile

.gitea/workflows/harmony_composer.yaml

@@ -0,0 +1,46 @@
+name: Compile and package harmony_composer
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  check:
+    runs-on: rust-cargo
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Build for Linux x86_64
+        run: cargo build --release --bin harmony_composer --target x86_64-unknown-linux-gnu
+
+      - name: Build for Linux ARM64
+        run: cargo build --release --bin harmony_composer --target aarch64-unknown-linux-gnu
+
+      - name: Build for Windows x86_64 GNU
+        run: cargo build --release --bin harmony_composer --target x86_64-pc-windows-gnu
+
+      # - name: Build for MacOS ARM64
+      #   run: cargo build --release --bin harmony_composer --target aarch64-apple-darwin
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: binaries
+          path: |
+            target/x86_64-unknown-linux-gnu/release/harmony_composer
+            target/aarch64-unknown-linux-gnu/release/harmony_composer
+            target/x86_64-pc-windows-gnu/release/harmony_composer.exe
+
+      - name: Setup log into hub.nationtech.io
+        uses: docker/login-action@v2
+        with:
+          registry: hub.nationtech.io
+          username: ${{ secrets.HUB_BOT_USERNAME }}
+          password: ${{ secrets.HUB_BOT_PASSWORD }}
+
+      # TODO: build ARM images too
+      - name: Build docker container
+        run: docker build . -t hub.nationtech.io/harmony/harmony_composer
+
+      - name: Push docker container
+        run: docker push hub.nationtech.io/harmony/harmony_composer