add release.yaml (#1)

* add release.yaml

* setup go

* explicit permission

* attempt to fix repo name

* change docker repo name

* change docker repo name again

* last attempt

* permissions

* update release.yaml

.github/workflows/release.yaml

@@ -0,0 +1,28 @@
+name: Release
+
+on:
+  push:
+    tags:
+      - 'v*.*.*'
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4
+
+    - uses: actions/setup-go@v5
+      with:
+        go-version: '1.22.x'
+
+    - name: Setup KO
+      uses: ko-build/[email protected]
+
+    - name: Publish
+      run: |
+        ko build ./cmd/emailer --platform="linux/amd64,linux/arm64" --base-import-paths --tags ${{github.ref_name}}