docker entrypoint.sh没有root权限

Question

Dockerfile

FROM ubuntu:18.04

ADD entrypoint.sh /usr/local/bin/
RUN chown root:root /usr/local/bin/entrypoint.sh
RUN chmod 4755 /usr/local/bin/entrypoint.sh
ENTRYPOINT ["entrypoint.sh"]

entrypoint.sh

#!/usr/bin/env bash

ulimit -n 5000000

docker build -t test .
docker run -it --rm --name testE test bash  

result: /usr/local/bin/entrypoint.sh: line 3: ulimit: open files: cannot modify limit: Operation not permitted

How to resolve the problem?

Answer 1

you can do it in parameter

docker run -it --ulimit nofile=1024:1024  --rm --name testE test bash

Click set-ulimits-in-container