fix: lint dockerfile

Signed-off-by: Zadkiel AHARONIAN <hello@zadkiel.fr>

Author: aslafy-z

Dockerfile

@@ -31,7 +31,7 @@ COPY pkg/ pkg/
 # Build
 RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go build $GO_BUILD_FLAGS -o /usr/local/bin/manager
 
-FROM builder as debug
+FROM builder AS debug
 
 RUN CGO_ENABLED=0 GOOS=$TARGETOS GOARCH=$TARGETARCH go install github.com/go-delve/delve/cmd/dlv@latest