Removed GOARCH parameter to be able to build arm images

Author: Jan Collijs

Dockerfile

@@ -11,7 +11,7 @@ WORKDIR $GOPATH/src/mypackage/myapp/
 #get dependancies
 RUN go get -d -v
 #build the binary
-RUN CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -a -installsuffix cgo -ldflags="-w -s" -o /go/bin/alertmanager-discord
+RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -ldflags="-w -s" -o /go/bin/alertmanager-discord
 
 
 # STEP 2 build a small image
@@ -26,4 +26,3 @@ ENV LISTEN_ADDRESS=0.0.0.0:9094
 EXPOSE 9094
 USER appuser
 ENTRYPOINT ["/go/bin/alertmanager-discord"]
-