quick permissions match without a full rebuild

workflows/userdocker/Dockerfile

+#FROM nvidia/cuda:11.2.0-cudnn8-runtime-ubuntu20.04
+FROM rnaseq:latest
+
+# Overide user name at build, if buil-arg no passed, will create user named `default` user
+USER root
+ARG USERNAME=zim-gast
+ARG USERID=1010
+RUN usermod -u $USERID $USERNAME
+# Create a group and user
+
+USER $USERNAME
+WORKDIR /home/$USERNAME/
+CMD ["bash"]
+
+