combine USERID and GROUPID with bpdm-user/group name

[FaGru3n]

Hi @nicoprow,

found out that your Dockerfiles generate a User with a new Group but they will not directly connect to used security_contecxt in deployment.yml

bpdm/bpdm-pool/Dockerfile

Lines 9 to 10 in 0d4a4ad

	RUN addgroup -S bpdm && adduser -S bpdm -G bpdm
	USER bpdm

some suggestion from other etx members:

ARG USERNAME=bpdm
ARG USERID=10001
ARG GID=3000

RUN groupadd --gid $GID -S $USERNAME \
    && useradd --uid $USERID --gid $GID -m $USERNAME 

other flavor if you modify the security_context in deployment.yaml

 RUN addgroup -g 101 -S bpdm  \ 
     && adduser -u 100 -S bpdm -G bpdm \ 

in little demo-run found out that user bpdm will not directly use the provided sercurity context ID`s

[FaGru3n]

dockerfiles are updated issues can be closed for now