Parallel execution

[ihucos]

This works with docker:

$ diff <(docker run -i busybox echo A) <(docker run -i busybox echo B)
1c1
< A
---
> B

On docker-compose:

$ diff <(docker-compose run web sh -c "echo A")  <(docker-compose run web sh -c "echo B")
ERROR: Cannot create container for service web: Conflict. The container name "/r_web_run_4" is already in use by container b68344642f06c1035dba53416d6f504f84173223aa2e145638ab07ad0b81806d. You have to remove (or rename) that container to be able to reuse that name.
1d0
< A

Pressing some enters after the command execution:

$ diff <(docker-compose run web sh -c "echo A")  <(docker-compose run web sh -c "echo B")
ERROR: Cannot create container for service web: Conflict. The container name "/r_web_run_5" is already in use by container 54317da69a9f7953cc058d1c72e80d3c2dcf922247b2566b5765262f9881a263. You have to remove (or rename) that container to be able to reuse that name.



Traceback (most recent call last):
  File "docker-compose", line 3, in <module>
  File "compose/cli/main.py", line 88, in main
  File "compose/cli/main.py", line 140, in perform_command
  File "compose/cli/main.py", line 736, in run
  File "compose/cli/main.py", line 1055, in run_one_off_container
  File "site-packages/dockerpty/pty.py", line 334, in start
  File "site-packages/dockerpty/pty.py", line 373, in _hijack_tty
  File "site-packages/dockerpty/io.py", line 378, in flush
OSError: [Errno 5] Input/output error
Failed to execute script docker-compose

[shin-]

Duplicate of #4688