Loading CSV file to Neo4j using Docker not working

I have a problem while importing .csv file to Neo4j. My neo4j is on docker, when trying to import the csv using express, I get an error:
Neo4jError: Couldn't load the external resource at: file:/organizations.csv

I followed this: Neo4j LOAD CSV Error: unknown protocol: c, so I changed my neo4j.conf file, but it didn’t resolve my problem, I still get the error. The path is 100% fine, because my .js file is where the .csv file is.

LOAD CSV FROM 'file:///organizacje.csv' AS line
MERGE (o: Organization {organizationNr: toInteger(line[0]),name: line[1]})
RETURN o

What is wrong here?