Add github workflow for release docker images for kpt go functions (#72)

Author: haiyanmeng

.github/workflows/release-go-functions.yaml

@@ -0,0 +1,43 @@
+name: release-go-functions
+
+on:
+  push:
+    tags:
+      - release-go-functions-*
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    env:
+      GOPATH: /home/runner/work/kpt-functions-catalog/functions/go
+      GO111MODULE: on
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up gcloud
+        uses: GoogleCloudPlatform/github-actions/setup-gcloud@master
+        with:
+          version: '285.0.0'
+          project_id: ${{ secrets.GCP_PROJECT_ID }}
+          service_account_email: ${{ secrets.GCP_SA_EMAIL }}
+          service_account_key: ${{ secrets.GCP_SA_KEY }}
+          export_default_credentials: true
+      # Configure docker to use the gcloud command-line tool as a credential helper
+      - run: gcloud auth configure-docker
+      - name: Set up Go 1.13
+        uses: actions/setup-go@v1
+        with:
+          go-version: 1.13
+        id: go
+      - name: Check out code into GOPATH
+        uses: actions/checkout@v1
+        with:
+          path: go/src/github.com/${{ github.repository }}
+      - name: Get the version
+        id: get_version
+        run: echo ::set-output name=TAG_NAME::${GITHUB_REF#refs/tags/}
+      - name: Publish images to container registry
+        run: |
+          cd functions/go
+          ./publish-functions.sh
+        env:
+          TAG: ${{ steps.branch_name.outputs.TAG_NAME }}

functions/go/publish-functions.sh

@@ -0,0 +1,30 @@
+#!/bin/bash
+# Copyright 2020 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -euo pipefail
+
+image_tag=${TAG:-latest}
+
+# iterate over each subdir, build and push Docker images.
+for dir in  */
+do
+  image_name=gcr.io/kpt-functions/"${dir%/}"
+  image="${image_name}":"${image_tag}"
+  set -x
+  ( cd "${dir}" && make )
+  docker build -t "${image}" -t "${image_name}" -f "${dir}"/Dockerfile "${dir}"
+  docker push "${image_name}"
+  set +x
+done

functions/go/set-namespace/Makefile

@@ -0,0 +1,21 @@
+.PHONY: fix vet fmt test lint
+
+GOPATH := $(shell go env GOPATH)
+
+all: fix vet fmt test lint
+
+fix:
+	go fix ./...
+
+fmt:
+	go fmt ./...
+
+lint:
+	(which $(GOPATH)/bin/golangci-lint || go get github.com/golangci/golangci-lint/cmd/golangci-lint)
+	$(GOPATH)/bin/golangci-lint run ./...
+
+test:
+	go test -cover ./...
+
+vet:
+	go vet ./...