Docker example build fail due to POSTGRESQL_URL environment variable

in docker example, Step 9/13 : RUN prisma2 generate fails.

I have the following error:

Error: Schema parsing error: Environment variable not found: POSTGRESQL_URL.
  -->  /opt/app/prisma/schema.prisma:4
   | 
 3 |   // Like, postgresql://user:password@localhost:5432/database/schema
 4 |   url      = env("POSTGRESQL_URL")
 5 | }
   | 

why url is needed at build time?

[lvauvillier]

Yes, of course, it makes sense. But at this point, (build time) there is no need to evaluate the variable, no ?

The workaround works with an empty string. I think prisma doesn’t need to know the value of the environment var to generate the client. It just needs to know that the final value will be provided thought this variable.

[nikolasburk]

Thanks a lot for opening this issue @lvauvillier 🙏

We’ll be fixing the Docker example soon, we created another issue to track this here: https://github.com/prisma/prisma-examples/issues/1437