diff --git a/contrib/docker/Dockerfile.multiarch b/contrib/docker/Dockerfile.multiarch
index 94474610..ee72fd10 100644
--- a/contrib/docker/Dockerfile.multiarch
+++ b/contrib/docker/Dockerfile.multiarch
@@ -9,7 +9,7 @@ ARG TARGETARCH
 ENV CGO_ENABLED=0
 ENV GOOS=${TARGETOS} GOARCH=${TARGETARCH}
 
-RUN GOOS=${TARGETOS} GOARCH=${TARGETARCH} apk add git && ./build && go build -o /src/genkeys cmd/genkeys/main.go
+RUN apk add git && ./build && go build -o /src/genkeys cmd/genkeys/main.go
 
 FROM docker.io/alpine