feat(binary): move to self contained binary 📦

Author: bign8

.dockerignore

@@ -1,2 +1,5 @@
+about
 _site
 _attic
+.git
+Dockerfile

Dockerfile

@@ -1,11 +1,17 @@
-FROM jekyll/jekyll:3 as builder
+FROM jekyll/jekyll:4 as builder
 RUN NOKOGIRI_USE_SYSTEM_LIBRARIES=true gem install html-proofer
 ADD . /site
 WORKDIR /site
 RUN mkdir _site
 RUN jekyll build
-RUN /usr/gem/bin/htmlproofer ./_site --disable-external
+RUN /usr/gem/bin/htmlproofer _site --disable-external
 
-FROM bign8/static:latest
-COPY --from=builder /site/_site /data/
-EXPOSE 8080
+FROM golang:1.16-alpine as go
+WORKDIR /go/src
+COPY --from=builder /site/_site ./_site
+ADD main.go go.mod ./
+RUN CGO_ENABLED=0 go build -ldflags="-s -w" -o /go/bin/about -v
+
+FROM scratch
+COPY --from=go /go/bin/about /about
+ENTRYPOINT ["/about"]

_config.yml

@@ -7,3 +7,7 @@ exclude:
     - Dockerfile
     - README.md
     - makefile
+    - main.go
+    - go.mod
+    - ship.sh
+    - about.service

about.service

@@ -0,0 +1,16 @@
+[Unit]
+Description=About service
+After=network.target
+
+[Service]
+Type=simple
+Restart=always
+RestartSec=1
+User=root
+WorkingDirectory=/opt/bign8
+ExecStartPre=/bin/cp /opt/bign8/about /opt/bign8/about.run
+ExecStart=/opt/bign8/about.run
+Environment="PORT=9999"
+
+[Install]
+WantedBy=multi-user.target

go.mod

@@ -0,0 +1,3 @@
+module bign8.info/about
+
+go 1.16

main.go

@@ -0,0 +1,28 @@
+package main
+
+import (
+	"embed"
+	"io/fs"
+	"log"
+	"net/http"
+	"os"
+)
+
+//go:embed _site
+var site embed.FS
+
+func main() {
+	root, err := fs.Sub(site, "_site")
+	if err != nil {
+		log.Fatal(err)
+	}
+	p := ":" + os.Getenv("PORT")
+	if p == ":" {
+		log.Fatal("Missing PORT variable")
+	}
+	log.Printf("Serving on %s", p)
+	http.Handle("/", http.FileServer(http.FS(root)))
+	if err := http.ListenAndServe(p, nil); err != nil {
+		log.Fatal(err)
+	}
+}

makefile

@@ -3,7 +3,7 @@ docker:
 .PHONY:=docker
 
 serve:
-	docker run --rm --label=jekyll --volume=$(shell pwd):/srv/jekyll -it -p 4000:4000 jekyll/jekyll jekyll serve --watch --drafts
+	docker run --rm --label=jekyll --volume=$(shell pwd):/srv/jekyll -it -p 4000:4000 jekyll/jekyll:4 jekyll serve --watch --drafts
 .PHONY:=serve
 
 deploy: docker

ship.sh

@@ -0,0 +1,11 @@
+#! /bin/bash -ex
+
+rm -rf _site about.gz
+
+docker run --rm --volume=$(pwd):/srv/jekyll -it jekyll/jekyll:4 jekyll build --quiet
+go build -o about -v -ldflags="-w -s" .
+gzip about
+scp about.service about.gz me.bign8.info:/opt/bign8
+ssh me.bign8.info -- "gzip -df /opt/bign8/about.gz && sudo systemctl daemon-reload && sudo systemctl restart about"
+
+rm -rf _site about.gz