Postgres migration from SQLite in a Docker environment

1

Hi All,
I tested Kanboard within Docker for a little while and, in fact, was so pleased with it that I began inputing real world data in it.
Now I want to migrate to a Postgres database from the current SQLite one.
So:

  1. I extracted all data from SQLite using the Export function
  2. I changed the config.php file content according to the instructions
  3. I then tried to use psql from the command line to import the .sql file into a newly created kanboard database on my Postgres server (I am familiar with this kind of operations)

It does not work: many syntax errors are preventing the manual migration to take place.

Please help.
S.