Add script to build separate binary artifact

.buildkite/pipeline.yaml

@@ -4,7 +4,14 @@ steps:
       queue: default
       os: linux
     commands:
-      - buildah bud --format=docker --layers -t embarkstudios/wireguard-ui:latest -f Dockerfile .
-      - buildah bud --format=docker --layers -t embarkstudios/wireguard-ui:debug -f Dockerfile.debug .
+      - ./build.sh
       - buildah push --authfile /root/.dockerhub/config.json embarkstudios/wireguard-ui:latest
+      - tar czf wireguard-ui-linux-amd64-latest.tar.gz ./wireguard-ui
+      - buildkite-agent artifact upload wireguard-ui-linux-amd64-latest.tar.gz
+  - name: Build debug  container image
+    agents:
+      queue: default
+      os: linux
+    commands:
+      - buildah bud --format=docker --layers -t embarkstudios/wireguard-ui:debug -f Dockerfile.debug .
       - buildah push --authfile /root/.dockerhub/config.json embarkstudios/wireguard-ui:debug

build.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+set -ex
+
+npm=$(buildah from node:12)
+npm_run="buildah run --volume=${PWD}/ui:/ui $npm"
+buildah config --workingdir=/ui $npm
+$npm_run npm install
+$npm_run npm run build
+buildah umount $npm
+
+go=$(buildah from golang:1.13.1)
+go_run="buildah run --volume=${PWD}:/wg --volume=${HOME}/.cache:/.cache ${go}"
+
+buildah config --workingdir=/wg $go
+$go_run go get github.com/go-bindata/go-bindata/...
+$go_run go get github.com/elazarl/go-bindata-assetfs/...
+$go_run go mod download
+$go_run go-bindata-assetfs -prefix ui/dist ui/dist
+$go_run go build .
+buildah umount $go
+
+dist=$(buildah from --format=docker gcr.io/distroless/base)
+buildah config --entrypoint=/wireguard-ui $dist
+buildah copy $dist wireguard-ui /
+buildah commit $dist embarkstudios/wireguard-ui:latest
+buildah umount $dist

go.mod

@@ -6,6 +6,7 @@ require (
 	github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751 // indirect
 	github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d // indirect
 	github.com/elazarl/go-bindata-assetfs v1.0.0
+	github.com/go-bindata/go-bindata v3.1.2+incompatible // indirect
 	github.com/google/nftables v0.0.0-20190906062827-5d14089d2edc
 	github.com/julienschmidt/httprouter v1.3.0
 	github.com/sirupsen/logrus v1.4.2

go.sum

@@ -7,6 +7,8 @@ github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/elazarl/go-bindata-assetfs v1.0.0 h1:G/bYguwHIzWq9ZoyUQqrjTmJbbYn3j3CKKpKinvZLFk=
 github.com/elazarl/go-bindata-assetfs v1.0.0/go.mod h1:v+YaWX3bdea5J/mo8dSETolEo7R71Vk1u8bnjau5yw4=
+github.com/go-bindata/go-bindata v3.1.2+incompatible h1:5vjJMVhowQdPzjE1LdxyFF7YFTXg5IgGVW4gBr5IbvE=
+github.com/go-bindata/go-bindata v3.1.2+incompatible/go.mod h1:xK8Dsgwmeed+BBsSy2XTopBn/8uK2HWuGSnA11C3Joo=
 github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
 github.com/google/go-cmp v0.3.0 h1:crn/baboCvb5fXaQ0IJ1SGTsTVrWpDsCWC8EGETZijY=
 github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=