docker-compose gives ERROR: Cannot locate specified Dockerfile: Dockerfile

Posted 2020-12-10 chucklu

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Here is how to specify dockerfile. Sorry I cannot do it in comments as formatting is not supported over there.

app:
    build:
      context: app
      dockerfile: Dockerfile

‘./docker-compose.yml‘, service must be a mapping, not a NoneType

这里需要注意排版问题

YAML is indentation dependent. This

services:
zoo1:

is a mapping with two keys that both map to null (i.e. None in Python).

Whereas:

services:
   zoo1:

is a mapping nested in a mapping. The key ‘services‘ has as value a mapping with key zoo1 (which again has a value null).

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