create http server

Author: icowan

.gitignore

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+.idea/
+main
+.DS_Store

Dockerfile

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+FROM golang:latest as build-env
+
+ENV GO111MODULE=on
+ENV BUILDPATH=github.com/kplcloud/world
+#ENV GOPROXY=goproxy.io
+ENV GOPATH=/go
+RUN mkdir -p /go/src/${BUILDPATH}
+COPY ./ /go/src/${BUILDPATH}
+RUN cd /go/src/${BUILDPATH} && CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go install -v
+
+FROM alpine:latest
+
+COPY --from=build-env /go/bin/world /go/bin/world
+WORKDIR /go/bin/
+CMD ["/go/bin/world"]

main.go

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+package main
+
+import (
+	"net/http"
+	"io"
+	"os"
+	"io/ioutil"
+)
+
+func main() {
+
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		resp, err := http.Get("http://hello:8080")
+		if err != nil {
+			io.WriteString(w, err.Error())
+			return
+		}
+		defer resp.Body.Close()
+
+		body, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			io.WriteString(w, err.Error())
+			return
+		}
+
+		io.WriteString(w, "name: "+os.Getenv("HOSTNAME")+" ---> "+string(body))
+	})
+
+	http.HandleFunc("/name", func(writer http.ResponseWriter, request *http.Request) {
+		io.WriteString(writer, "this HOSTNAME is: " + os.Getenv("HOSTNAME"))
+	})
+
+	if err := http.ListenAndServe(":8080", nil); err != nil {
+		panic(err)
+	}
+}