refer to the example of the official document part3 and execute the
docker stack deploy-c docker-composer. Yml getstartedlab with the error message as follows:
cappuccinooos-MacBook-Pro:part3 cappuccinooo$ docker stack deploy -c docker-compose.yml getstartedlab yaml: line 1: mapping values are not allowed in this context
from the error message can know, is docker – compose. Yml file format has a problem, yml file has strict requirements on the blank space indentation, direct copy the contents of the official document is not enough, the search on the net have tools to online check yml file format, format errors will give corresponding hint, feel quite convenient, and the link below: https://www.bejson.com/validators/yaml/ p>
after modifying the docker-composer. Yml, execute the
docker stack deploy-c docker-composer. Yml getstartedlab command successfully
cappuccinooos-MacBook-Pro:part3 cappuccinooo$ docker stack deploy -c docker-compose.yml getstartedlab Creating network getstartedlab_webnet Creating service getstartedlab_web
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