docs: add comments to install all modules when devDeps is ignored by default

[unix]

Why this changes

When we want to reduce the image size of a NodeJS project and set the NODE_ENV to production before install, the package manager will ignore devDependencies. This is in line with expected behavior.

However, in the current JavaScript ecosystem, where most projects require the use of scaffolding from devDependencies for the bundle (or compile), ignoring dependencies when building images can cause user deployments to fail. For users who lack experience with package managers, this cause is hard to spot.

Description of the changes

Reducing the size of the image reduces the deployment time for users and for some users does not require any changes in settings, which is correct, no changes are required.

Add additional comments to get a hint when the user tries to change the Dockerfile to resolve the error.

Needs to review

I'm not quite sure if the comments in the template will respect the conditional statement, if it doesn't work we can remove the conditional statement.

Refs

• [Node.js] Default generated Dockerfile may cause user deployment to fail