Some improvement (#27)

* Refactor using xiter
* Use golangci-lint
* Use goreleaser
* Maintain latest tag of container image
* Update README.md

Author: apstndb

.github/workflows/golangci-lint.yml

@@ -0,0 +1,26 @@
+name: golangci-lint
+on:
+  push:
+    branches:
+      - main
+      - master
+  pull_request:
+
+permissions:
+  contents: read
+  # Optional: allow read access to pull request. Use with `only-new-issues` option.
+  # pull-requests: read
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: stable
+      - name: golangci-lint
+        uses: golangci/golangci-lint-action@v6
+        with:
+          version: v1.60

.github/workflows/goreleaser.yml

@@ -0,0 +1,29 @@
+name: goreleaser
+
+on:
+  push:
+    tags:
+      - '*'
+
+permissions:
+  contents: write
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      -
+        name: Set up Go
+        uses: actions/setup-go@v5
+      -
+        name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v6
+        with:
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/ko.yml

@@ -18,4 +18,4 @@ jobs:
       - uses: ko-build/[email protected]
       - run: |
           tag=$(echo ${{ github.ref }} | cut -c11-)
-          ko build -t ${tag} -B
+          ko build -t latest,${tag} -B

.goreleaser.yaml

@@ -0,0 +1,46 @@
+# This is an example .goreleaser.yml file with some sensible defaults.
+# Make sure to check the documentation at https://goreleaser.com
+
+# The lines below are called `modelines`. See `:help modeline`
+# Feel free to remove those if you don't want/need to use them.
+# yaml-language-server: $schema=https://goreleaser.com/static/schema.json
+# vim: set ts=2 sw=2 tw=0 fo=cnqoj
+
+version: 2
+
+before:
+  hooks:
+    # You may remove this if you don't use go modules.
+    - go mod tidy
+    # you may remove this if you don't need go generate
+    - go generate ./...
+
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+
+archives:
+  - format: tar.gz
+    # this name template makes the OS and Arch compatible with the results of `uname`.
+    name_template: >-
+      {{ .ProjectName }}_
+      {{- title .Os }}_
+      {{- if eq .Arch "amd64" }}x86_64
+      {{- else if eq .Arch "386" }}i386
+      {{- else }}{{ .Arch }}{{ end }}
+      {{- if .Arm }}v{{ .Arm }}{{ end }}
+    # use zip for windows archives
+    format_overrides:
+      - goos: windows
+        format: zip
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - "^docs:"
+      - "^test:"

README.md

@@ -19,6 +19,8 @@ This tool is still pre-release quality and none of guarantees.
 
 ## Usage
 
+Local build requires Go 1.23.
+
 ```
 $ go install github.com/apstndb/execspansql@latest
 ```
@@ -56,6 +58,15 @@ Arguments:
   database:                                    (required) ID of the database.
 ```
 
+You can use container image in GitHub Container Registry.
+```
+$ docker run --rm -t -v "${HOME}/.config/gcloud/application_default_credentials.json:/home/nonroot/.config/gcloud/application_default_credentials.json:ro" \
+    ghcr.io/apstndb/execspansql/execspansql:latest -p ${SPANNER_PROJECT} -i ${SPANNER_INSTANCE} ${SPANNER_DATABASE} --sql 'SELECT 1'
+# or use specific version
+$ docker run --rm -t -v "${HOME}/.config/gcloud/application_default_credentials.json:/home/nonroot/.config/gcloud/application_default_credentials.json:ro" \
+    ghcr.io/apstndb/execspansql/execspansql:v0.3.3 -p ${SPANNER_PROJECT} -i ${SPANNER_INSTANCE} ${SPANNER_DATABASE} --sql 'SELECT 1'
+```
+
 ## Notable features
 
 There are examples omitting some required options.