Using centurylink's golang-builder to create tiny docker image, going from ~400MB to 5.4MB.

Dockerfile

@@ -1,8 +1,7 @@
-FROM crosbymichael/golang
+FROM scratch
+
+COPY dockerui /
+COPY dist /
 
-COPY dockerui.go /app/
-COPY dist/ /app/
-WORKDIR /app/
-RUN go build dockerui.go
 EXPOSE 9000
-ENTRYPOINT ["./dockerui"]
+ENTRYPOINT ["/dockerui"]

dockerui.go

@@ -1,4 +1,4 @@
-package main
+package main // import "github.com/crosbymichael/dockerui"
 
 import (
 	"flag"