Add GitHub Actions workflow file that may or may not work

Signed-off-by: Samuli Seppänen <samuli.seppanen@puppeteers.net>

Author: mattock

.github/workflows/build-and-publish.yml

@@ -0,0 +1,36 @@
+name: Build and Publish Go Program
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  build-and-publish:
+    name: Build and Publish
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Set up Go
+      uses: actions/setup-go@v2
+      with:
+        go-version: '1.24.2'
+
+    - name: Check out code
+      uses: actions/checkout@v2
+
+    - name: Build binary
+      run: |
+        go build -o updates_exporter main.go
+      env:
+        CGO_ENABLED: 0
+        GOOS: linux
+        GOARCH: amd64
+
+    - name: Publish binary
+      uses: softprops/action-gh-release@v1
+      with:
+        files: updates_exporter
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+