WIP: use version numbers in build artifacts

.github/workflows/check_lint_build.yaml

@@ -48,17 +48,25 @@ jobs:
           command: build
           args: --release
 
+      - name: Set version number environment variable and output filename
+        run: |
+          cargo --version
+          THUNDER_APP_VERSION=cargo metadata | jq -e '.packages | map(select(.name == "thunder_app") | .version) | .[0]'
+          OUTPUT_FILENAME="thunder-${THUNDER_APP_VERSION}-x86_64-unknown-linux-gnu"
+          echo "THUNDER_APP_VERSION=$THUNDER_APP_VERSION" >> "$GITHUB_ENV"
+          echo "OUTPUT_FILENAME=$OUTPUT_FILENAME" >> "$GITHUB_ENV"
+
       - name: 'Set filename for release binary'
         run: |
           pushd "target/release"
-          mv "thunder_app" "thunder-x86_64-unknown-linux-gnu"
+          ln -s "thunder_app" "${OUTPUT_FILENAME}"
           popd
 
       - name: 'Upload Artifacts (thunder)'
         uses: actions/upload-artifact@v2
         with:
-          name: thunder-x86_64-unknown-linux-gnu
-          path: target/release/thunder-x86_64-unknown-linux-gnu
+          name: ${{ env.OUTPUT_FILENAME }}
+          path: target/release/${{ env.OUTPUT_FILENAME }}
           if-no-files-found: error
 
   build-macos: