Use multi-stage build for smaller Docker image

diff --git a/Dockerfile b/Dockerfile
index 5ed9bfc3266ec808086f3f0271c951277d8b40f2..86cbd635931679f55d39591b7d3c35181c4985d7 100644 (file)
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,13 +1,16 @@
-FROM golang:1.18
+FROM golang:1.18 AS builder
 
 WORKDIR /app
 COPY . .
 
-RUN go build -o /app/server/server cmd/mobius-hotline-server/main.go \
-  && chmod a+x /app/server/server
+RUN CGO_ENABLED=0 go build -o /app/server/server cmd/mobius-hotline-server/main.go && chmod a+x /app/server/server
 
-EXPOSE 5500 5501
+FROM scratch
+
+WORKDIR /app/
+COPY --from=builder /app/server/server ./
+COPY --from=builder /app/cmd/mobius-hotline-server/mobius/config /usr/local/var/mobius/config
 
-WORKDIR /app/server/
-CMD ["./server"]
+EXPOSE 5500 5501
 
+CMD ["/app/server"]