default -body=$BODY

Dockerfile

@@ -0,0 +1,11 @@
+FROM golang:1.21-bullseye as builder
+
+COPY . /go/src/app
+WORKDIR /go/src/app
+RUN GOOS=linux CGO_ENABLED=0 go build -o /bin/app -a -installsuffix cgo -trimpath -ldflags "-s -w" -tags musl
+
+FROM alpine
+RUN apk update && apk --no-cache upgrade
+COPY --from=builder /bin/app /bin/
+CMD []
+ENTRYPOINT ["/bin/app"]

build.sh

@@ -0,0 +1,8 @@
+#! /bin/bash
+
+set -euo pipefail
+
+docker rmi k3d-test:5001/gitea/echo-server:latest || true
+docker build -t k3d-test:5001/gitea/echo-server:latest .
+docker images | grep k3d-test:5001/gitea/echo-server
+docker push k3d-test:5001/gitea/echo-server:latest

main.go

@@ -32,7 +32,7 @@ func main() {
 	fail := flag.Bool("fail", false, "fail connections forever")
 	block := flag.Int("block", 0, "seconds to block connections")
 	status := flag.Int("status", http.StatusOK, "status to always return")
-	body := flag.String("body", "", "body to always return")
+	body := flag.String("body", envOrDefault("BODY", ""), "body to always return")
 	flag.Parse()
 
 	// start server