Revert to controller user

Signed-off-by: Paulo Gomes <[email protected]>

Author: Paulo Gomes

Dockerfile

@@ -90,6 +90,10 @@ FROM debian:bookworm-slim as controller
 # Link repo to the GitHub Container Registry image
 LABEL org.opencontainers.image.source="https://github.com/fluxcd/source-controller"
 
+# Configure user
+RUN groupadd controller && \
+    useradd --gid controller --shell /bin/sh --create-home controller
+
 ARG TARGETPLATFORM
 RUN apt update && apt install -y ca-certificates
 
@@ -98,5 +102,5 @@ COPY --from=build /workspace/source-controller /usr/local/bin/
 COPY --from=libgit2-bullseye /libgit2/built-on-glibc-version /
 COPY ATTRIBUTIONS.md /
 
-USER 65534:65534
+USER controller
 ENTRYPOINT [ "source-controller" ]