Switch to appuser

Signed-off-by: Benoit Donneaux <benoit@leastauthority.com>

docker/jekyll/Dockerfile

@@ -10,9 +10,9 @@ RUN INSTALL_PKGS="gcc g++ libyaml-dev make nodejs" && \
 
 # Parameters for default user:group
 ARG uid=1000
-ARG user=ubuntu
+ARG user=appuser
 ARG gid=1000
-ARG group=ubuntu
+ARG group=appgroup
 
 # Ensure desired user and group for build and runtime (convenient)
 RUN userdel --force --remove $(getent passwd ${uid} | cut -d: -f1) || true; \