ci: add GHA workflow 'push'

.github/workflows/push.yml

@@ -0,0 +1,24 @@
+name: 'snapshot'
+on: [push, pull_request]
+jobs:
+  snapshot:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/setup-go@v1
+      with:
+        go-version: '1.13.x'
+    - uses: actions/checkout@v1
+    - name: install deps
+      run: |
+        curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sudo sh -s -- -b /usr/local/bin/ latest
+        curl -sfL https://install.goreleaser.com/github.com/goreleaser/goreleaser.sh | sudo sh -s -- -b /usr/local/bin/ latest
+        sudo apt-get update
+        sudo apt-get install -y libdevmapper-dev libgpgme11-dev
+    - run: go get ./...
+    - run: golangci-lint run -v
+    - run: goreleaser --snapshot --skip-publish --rm-dist
+    - run: docker images
+    - uses: actions/upload-artifact@master
+      with:
+        name: dist
+        path: dist