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Run pyflame docker with --privileged to solve setns 4 error #1

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Run pyflame docker with --privileged to solve setns 4 error #1

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6 changes: 4 additions & 2 deletions Readme.md
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Expand Up @@ -12,10 +12,12 @@ This image can also be found on [Docker Hub](https://hub.docker.com/r/msoedov/py

```shell

docker run -it --cap-add SYS_PTRACE -v "$(pwd):/pyflame" msoedov/pyflame:2.7 bash
docker run -it --pid=host --privileged --cap-add SYS_PTRACE -v "$(pwd):/pyflame" msoedov/pyflame:2.7 bash
pyflame <PID> | flamegraph.pl > myprofile.svg

```
Note: `--cap-add SYS_PTRACE` is required and denied by default within Docker images
> * `--cap-add SYS_PTRACE` is required and denied by default within Docker images
> * `--pid=host` is required to allow container access processes of host machine
> * `--privileged` is required to solve `Failed to setns 4: Operation not permitted` problem

This is the bare minimum needed to use this image. Although further customization is made easier with a docker-compose file.