Question

The task is to complete a file stub '/home/ubuntu/833947-docker-user-context/script.sh' with one or more steps that do following
. Runs a new docker container "my-container" from the "busybox" image(latest tag) in ittaractive background mode. without pseudo-TTY allocation
and under user "nobody"

note:

. The completed solution will be evaluted in a new clean environment. Be sure everything is in the "/home/ubuntu/833947-docker-user-context" folder
. All the tasks should be done within a simple "bash/home/ubuntu/833947-docker-user-context/script.sh" execution
. Docker is already installed
. You have sudo access

Grading

The execution result of "docker exce -i my-container whoami" outputs show "nobody"

Answer 1

1) script.sh (we are creating a temporary docker file so that we can add logic of user nobody, so temporary docker image is local:local)

echo "FROM scratch" >Dockerfile ## it is expected that your image is having ubuntu image.

echo "COPY --from=busybox:latest /home/ubuntu/833947-docker-user-context /home/ubuntu/833947-docker-user-context" >>Dockerfile

echo "RUN groupadd nobody && useradd --no-user-group --groups nobody --password nobody123 --create-home nobody" >> Dockerfile
echo "USER nobody" >> Dockerfile

echo "ENTRYPOINT [\"tail\", \"-f\", \"/dev/null\"]" >>Dockerfile

docker build -t local:local .

docker container run --name my-container local:local

docker exec -i mycont4 whoami
nobody