add CI workflow

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+# See LICENSE file for copyright and license information
+name: CI
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+
+  build:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+
+    - name: Set up Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: '1.22.x'
+
+    - name: Setup go-task
+      uses: lukeshay/setup-task@v1    
+
+    - name: Test
+      run: task ci

Dockerfile

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+# Copyright 2024 Daniel Moch, all rights reserved
+FROM golang:1.21-alpine AS build
+
+RUN mkdir -p djmo.ch/dgit
+
+COPY ./ /djmo.ch/dgit/
+
+RUN cd /djmo.ch/dgit/cmd/dgit && CGO_ENABLED=0 go build ./
+
+FROM scratch
+
+COPY --from=build /djmo.ch/dgit/cmd/dgit/dgit /usr/local/bin/
+
+CMD ["/usr/local/bin/dgit"]
+
+USER 1001

devtools/build_deployment.sh

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+#!/bin/sh
+set -eu
+
+# See LICENSE file for copyright and license details
+
+[ -d .git ] || { echo "not at repo root ... exiting"; exit 1; }
+
+usage() {
+	echo "usage: $0 BUILD_TAG"
+}
+
+build() {
+	BUILD_TAG=$1
+	docker build -t $BUILD_TAG .
+}
+
+main() {
+	case "$1" in
+		"-h"|"--help"|"help")
+			usage
+			exit
+			;;
+		*)
+			build
+			;;
+	esac
+}