Add releasing Github workflow (#592)

Author: Slavek Kabrda

.github/workflows/release.yml

@@ -0,0 +1,32 @@
+# Copied from https://github.com/hashicorp/terraform-provider-scaffolding/blob/master/.github/workflows/release.yml
+name: release
+on:
+  push:
+    tags:
+      - 'v*'
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+      - name: Unshallow
+        run: git fetch --prune --unshallow
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.14
+      - name: Import GPG key
+        id: import_gpg
+        uses: paultyng/[email protected]
+        env:
+          GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
+          PASSPHRASE: ${{ secrets.PASSPHRASE }}
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          version: latest
+          args: release --rm-dist
+        env:
+          GPG_FINGERPRINT: ${{ steps.import_gpg.outputs.fingerprint }}
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}