Documentation about running the validator needs update

[rolfkleef]

Report by mail: "I’m trying to use run the IATI data validator on Docker and I get this error. I think its because the API URL is incorrect. I have a URL variable in the loop-unprocessed-files “API=http://validator-api/api” which probably is the issue."

The Docker images are build with the new ENTRYPOINT to by default run the process loop rather than the ant build target.

Either:

• The documentation needs to provide a better command line
• Or the script to launch a local validation should be checked and promoted