Fix add user procedure on docker-compose readme

[gvarela1981]

Fixes #5621

Proposed fixes:

Update Readme

Features:

• includes tests covering changes
• [X ] includes updated documentation
• includes user-visible changes
• includes API changes
• includes bugfix for possible backport

Please [X] all the boxes above that apply

[kowh-ai]

Hi Gonzalo - thanks for taking the time to look at this. Your proposed change works. This also works (as Iv'e just tested in on a fresh CKAN master docker install):

docker exec -it ckan /usr/lib/ckan/venv/bin/ckan -c /etc/ckan/production.ini sysadmin add johndoe email=johndoe@localhost name=johndoe

Do you think a one line command is more readable?

Thanks

[gvarela1981]

Hi Brett, it definitely think one line command is more readable.

I've push a new commit to my fork, please let me know if I should close this pull request and open a new one.

Thanks for your advice ! :)

[Gauravp-NEC]

@kowh-ai @gvarela1981 , issue #5621 is closed by PR #7301, Hence there is no need of this PR. This PR can be closed now.