Change the default generated code for e2b.Dockerfile when initializing custom template

[mlejva]

Everywhere in docs, we direct users to be using our code interpreter package. However when you run e2b template init, we still generate the e2b.Dockerfile with

FROM ubuntu:22.04

which won't work with the code interpreter package.

This PR changes the generated code to

FROM e2bdev/code-interpreter:latest

[changeset-bot]

🦋 Changeset detected

Latest commit: 71e8b3c

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
@e2b/cli	Minor

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[jakubno]

This still won't work, because of missing start_cmd

[mlejva]

This still won't work, because of missing start_cmd

Can you expand? This should work because users run e2b template build -c "/root/.jupyter/start-up.sh".

A user just had this issue that they generated e2b.Dockerfile with e2b template init and then they ran -c "/root/.jupyter/start-up.sh".

[jakubno]

I see, in that case it's okay

[jakubno]

I am thinking if we shouldn't do something in CLI, if it's only this Dockerfile and start command wasn't passed, add it automatically?