Trying to set up CI builds

.github/workflows/build.yaml

@@ -0,0 +1,47 @@
+name: Build/Push
+
+on:
+  push:
+    branches:
+      - main
+      - master
+    tags:
+      - v*
+
+jobs:
+  publish:
+    name: Publish container images
+    runs-on: ubuntu-latest
+    steps:
+      - name: Retrieve code
+        uses: actions/checkout@v2
+
+      - name: Gitlab variables
+        id: vars
+        run: build/gitlab-vars
+
+      - name: Login to GitHub Packages Docker Registry
+        uses: docker/login-action@v1
+        with:
+          registry: ghcr.io
+          username: ${{ github.repository_owner }}
+          password: ${{ secrets.CR_PAT }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+
+      # Currently required, because buildx doesn't support auto-push from docker
+      - name: Set up builder
+        uses: docker/setup-buildx-action@v1
+        id: buildx
+
+      - name: Build and push moth image
+        uses: docker/build-push-action@v2
+        with:
+          builder: ${{ steps.buildx.outputs.name }}
+          target: moth
+          file: build/Dockerfile
+          push: true
+          platforms: linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/ppc64le
+          tags: |
+            ghcr.io/nealey/vail:${{ steps.vars.outputs.tag }}

CHANGELOG.md

@@ -0,0 +1,9 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Calendar Versioning](https://calver.org/).
+
+## [2021-07-31]
+## Added
+- Now builds as a docker image

build/Dockerfile

@@ -2,7 +2,8 @@ FROM golang:1 AS builder
 
 COPY . /src
 COPY static /target/static
-RUN CGO_ENABLED=0 GOOS=linux go install -i -a -ldflags '-extldflags "-static"' /src/...
+WORKDIR /src
+RUN CGO_ENABLED=0 GOOS=linux go install -a -ldflags '-extldflags "-static"' ./...
 RUN cp -r /go/bin /target
 
 FROM scratch

build/build.sh

@@ -0,0 +1,15 @@
+#! /bin/sh
+
+set -e
+
+cd $(dirname $0)/..
+
+target=vail
+VERSION=$(cat CHANGELOG.md | awk -F '[][]' '/^## \[/ {print $2; exit}')
+tag=nealey/$target:$VERSION
+
+echo "==== Building $tag"
+docker build \
+    --tag $tag \
+    -f build/Dockerfile \
+    .

build/gitlab-vars

@@ -0,0 +1,25 @@
+#! /bin/sh
+
+case $1 in
+    -h|-help|--help)
+        echo "Usage: $0 TARGET"
+        echo
+        echo "Sets CI build variables for gitlab"
+        exit 1
+        ;;
+esac
+
+branch=$(git symbolic-ref -q --short HEAD)
+if [ "$branch" = "main" ]; then
+    branch=latest
+fi
+
+printf "Branch: %s\n" "$branch"
+printf "::set-output name=branch::%s\n" "$branch"
+printf "::set-output name=tag::%s\n" "$branch"
+
+# I think it will use whichever comes last
+git tag --points-at HEAD | while read tag; do
+    printf "Tag: %s\n" "$tag"
+    printf "::set-output name=tag::%s\n" "$tag"
+done