Initial commit.

Dockerfile

@@ -0,0 +1,8 @@
+FROM golang:latest as builder
+COPY serve.go /
+WORKDIR /
+RUN CGO_ENABLED=0 go build -a -installsuffix cgo -o serve .
+
+FROM scratch
+COPY --from=builder /serve /
+CMD ["/serve"]

serve.go

@@ -0,0 +1,24 @@
+package main
+
+import (
+	"net/http"
+	"os"
+)
+
+func main() {
+	host := env("HOST", "")
+	port := env("PORT", "8080")
+	folder := env("FOLDER", "/web") + "/"
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		http.ServeFile(w, r, folder+r.URL.Path)
+	})
+	http.ListenAndServe(host+":"+port, nil)
+}
+
+func env(key, fallback string) string {
+	if value := os.Getenv(key); 0 < len(value) {
+		return value
+	}
+	return fallback
+}