Initial

Dockerfile

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+FROM golang:alpine as build
+WORKDIR /root
+COPY . .
+RUN go build
+
+FROM alpine
+COPY --from=build /root/test /root/test
+EXPOSE 5000
+ENTRYPOINT ["/root/test"]

README.md

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+# Firewall test container
+
+## Build
+
+     $ docker build -t git.okoyono.de/f/firewall-test:latest .
+     $ docker push git.okoyono.de/f/firewall-test:latest
+
+## Run
+
+     $ docker pull git.okoyono.de/f/firewall-test
+     $ docker run git.okoyono.de/f/firewall-test 

go.mod

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+module test
+
+go 1.19

test.go

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+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+)
+
+func main() {
+	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
+		resp, err := http.Get("https://aaron-fischer.net/ryg")
+		if err != nil {
+			fmt.Printf("err: %v", err)
+		}
+
+		fmt.Printf("Resp: %v", resp.Status)
+		fmt.Fprintf(w, "Request from within the container to a website (Port 443): %v", resp.Status)
+	})
+
+	log.Fatal(http.ListenAndServe(":5000", nil))
+}