Let’s take a look at the not so common Docker Compose error:
"Configuration 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 supported version (e.g "2.2" or "3.3") and place your service definitions under the `services` key, or omit the `version` 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/"
The solution is quite obvious, so let’s dive into it.
Prerequisites
- Docker
- Docker Compose
- sudo privileges
Solution
Step 1. Remove the current Docker Compose version first.
sudo apt-get remove docker-compose
Step 2. Install the latest Docker Compose version, by following the official guide.
Note(s): Two other things to try if this doesn’t work though.
- Upgrade the Docker engine too.
- Try to downgrade. Specify an older docker-compose file version. For instance, if you are still getting the same error for version ‘3.8’, try with version number ‘3.7’, and so forth … you get me.
Conclusion
If you can think of any alternative solution, feel free to write a comment below. On a side note, follow our official channel on Telegram.
