From 3a91baab21f999553e2d29b867ec07279a90304a Mon Sep 17 00:00:00 2001
From: Martin Polden <mpolden@mpolden.no>
Date: Fri, 29 Mar 2019 20:38:43 +0100
Subject: [PATCH] Build without cgo

---
 Dockerfile | 3 ++-
 Makefile   | 7 ++++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index eee3c56..711588b 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -2,7 +2,8 @@
 FROM golang:1.12-stretch AS build
 WORKDIR /go/src/github.com/mpolden/echoip
 COPY . .
-ENV GO111MODULE=on
+# Must build without cgo because libc is unavailable in runtime image
+ENV GO111MODULE=on CGO_ENABLED=0
 RUN make
 
 # Run
diff --git a/Makefile b/Makefile
index 6c234b5..7d28655 100644
--- a/Makefile
+++ b/Makefile
@@ -39,5 +39,10 @@ docker-build:
 docker-login:
 	@echo "$(DOCKER_PASSWORD)" | docker login -u "$(DOCKER_USERNAME)" --password-stdin
 
-docker-push: docker-login
+docker-test:
+	$(eval CONTAINER=$(shell docker run --rm --detach --publish-all $(DOCKER_IMAGE)))
+	$(eval DOCKER_PORT=$(shell docker port $(CONTAINER) | cut -d ":" -f 2))
+	curl -qfsS -m 5 localhost:$(DOCKER_PORT) > /dev/null; docker stop $(CONTAINER)
+
+docker-push: docker-test docker-login
 	docker push $(DOCKER_IMAGE)