Prisma inside docker takes almost 300mb

Converted the Discussion into an issue based on this internal convo.

Discussed in https://github.com/prisma/prisma/discussions/11572

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^{Originally posted by vertti February 2, 2022} I was digging through my docker container that contains a simple app that uses Prisma.

Under node_modules you can see Prisma taking space like this:

total of 127MB. But slightly surprisingly, another 114 MB of Prisma stuff is found under .cache:

Are the .cache files necessary? Can I somehow avoid pulling those in? The total added size of Prisma is quite a lot!</div>

[JardarTemalogic]

I did some work to reduce the size of prisma in production. The build is intended for Linux. And a Docerfile that works for me is:

RUN rm -rf node_modules/.cache/
RUN rm -rf node_modules/@prisma/engines/
RUN rm -rf node_modules/.prisma/client/query_engine-windows.dll.node
RUN rm -rf node_modules/prisma/

This results in a total size of 44MB:

41M     .prisma
2.9M    @prisma

The build only queries the database and I do not use migration in production.

[janpio]

(In our release 4.8.0 we have made significant improvements, average decrease of 50%, on the size of our engine files. That should ease the pain, but we will continue looking into other solutions of course. Expect more updates from us in this direction soon.)