Containerfile and build target

Makefile

@@ -18,9 +18,13 @@ release: $(release_name)
 $(release_name):
 	mkdir -p $@
 
+container:
+	podman build -t rexserver -f container/Containerfile .
+
 clean:
 	make -C ./rex_client clean
 	make -C ./rex_server clean
 	rm -rf *.tar.gz
+	rm -rf rexforge_*
 
-.PHONY: release clean
+.PHONY: release clean container

container/Containerfile

@@ -0,0 +1,24 @@
+FROM docker.io/golang:alpine as go
+WORKDIR /build
+# ADD rex_server/go.mod rex_server/go.sum ./ # WARNING: Include go.sum
+ADD rex_server/go.mod ./
+
+RUN go mod download
+
+# Add the rest of the source
+ADD . .
+
+RUN go build -o ./rexserver ./rex_server/server.go
+
+# Runner image, drop privileges
+FROM docker.io/alpine:latest as runner
+RUN adduser -D nonroot
+RUN addgroup nonroot nonroot
+WORKDIR /app
+RUN chown nonroot:nonroot /app
+
+COPY --from=go /build/rexserver rexserver
+EXPOSE 8080
+USER nonroot:nonroot
+CMD ["./rexserver"]
+