Merge pull request #8 from ymatsiuk/master

Reduce docker image size to ~14MB
ContainerSolutions · Aug 31, 2020 · 35e8852 · 35e8852
2 parents 4461149 + 290d940
commit 35e8852
Showing 1 changed file with 11 additions and 11 deletions.
diff --git a/Dockerfile b/Dockerfile
@@ -1,12 +1,12 @@
-FROM golang:1.7-alpine
-
-RUN mkdir /app
+FROM golang:1.7-alpine AS builder
 COPY . /go/src/github.com/weaveworks/prometheus-swarm/
-
-RUN echo http:https://dl-cdn.alpinelinux.org/alpine/edge/community >> /etc/apk/repositories
-RUN apk update && apk add glide git
-RUN cd /go/src/github.com/weaveworks/prometheus-swarm/ && glide install
-
-RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o /app/main /go/src/github.com/weaveworks/prometheus-swarm/swarm.go
-
-ENTRYPOINT ["/app/main", "discover"]
+RUN echo "http:https://dl-cdn.alpinelinux.org/alpine/edge/community" >> /etc/apk/repositories \
+ && apk --update add glide git \
+ && cd /go/src/github.com/weaveworks/prometheus-swarm/ \
+ && mkdir /app \
+ && glide install \
+ && CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o /app/main /go/src/github.com/weaveworks/prometheus-swarm/swarm.go
+
+FROM alpine:3.6
+COPY --from=builder /app/main /promswarm
+ENTRYPOINT ["/promswarm", "discover"]