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There are a few potential reasons why the execution of the psql command with the postgres -c argument may not work when using docker run:

1. Incorrect argument format: Make sure that the argument is properly formatted and does not have any typos or syntax errors.

2. Insufficient permissions: Ensure that the user running the command has sufficient permissions to execute the command and access the database.

3. Wrong container image: Check that the correct container image with the PostgreSQL database is being used and that it is properly configured.

4. Port mapping issues: Verify that the container's port is mapped correctly and that there are no conflicts with the host system's ports.

5. Database not initialized: Make sure that the database is initialized and running properly. If the database has not been created or is not running, the psql command will not work.