Docker installation problem

[leicray]

I am unable to build docker using

$ docker-compose build --no-cache

It generates the error message:

ERROR: Version in "./docker-compose.yml" is unsupported. You might be seeing this error because you're using the wrong Compose file version. Either specify a version of "2" (or "2.0") and place your service definitions under the serviceskey, or omit theversion key and place your service definitions at the root of the file to use version 1. For more on the Compose file format versions, see https://docs.docker.com/compose/compose-file/

Any ideas?

[Peter-J-Freeman]

The version of docker-compose in the docker-compose.yml is version 3.

I suspect you need to update your installation of docker and docker compose to the latest version? Version 3 is supported with docker 1.13.0+ .

upgrade docker-compose for windows, mac and linux.

Updating Docker is usually most easily performed via a desktop app. Install docker app. Select between windows, mac and linux on the left of the screen.

Updating these tools ought to fix the problem