Merge pull request #1871 from sap-contributions/smaller-catnip-image

Reduce size of catnip image

Author: jochenehret

assets/catnip/Dockerfile

@@ -1,8 +1,15 @@
-FROM golang
+FROM --platform=$BUILDPLATFORM golang AS builder
+ARG TARGETOS
+ARG TARGETARCH
 WORKDIR /go/src/app
 COPY ./ ./
 
-RUN go build -o /go/bin/catnip /go/src/app/main.go
+RUN GOOS=$TARGETOS GOARCH=$TARGETARCH go build -o /go/bin/catnip /go/src/app/main.go
+
+FROM --platform=$TARGETPLATFORM alpine
+COPY --from=builder /go/bin/catnip /go/bin/catnip
+
+RUN apk add --no-cache ca-certificates bash curl lsb-release
 
 ENV PORT=8080
 CMD ["/go/bin/catnip"]