Dockerfile: Install pydantic with --no-binary

[anthonyfok]

This is to reduce the size of the resulting Docker image,
apparently from 969MB down to 861MB

Fixes #15

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Questions: Is it a good idea to push this to master branch? Or to keep it just for a special pydantic-no-binary branch for AWS Lambda only? Many thanks!

[jvanulde]

I think it should be an optional setting. We can note that it's a necessity for AWS Lambda. Perhaps we should propose to the pygeoapi community as well via a PR?

[anthonyfok]

Turns out I probably changed the wrong Dockerfile: instead of the one in the top-level directory, I probably should have changed aws-lambda/container/Dockerfile instead. (Thanks to @arashmalekz's comment #15 (comment) telling me about the aws-lambda directory which I neglected.)

See also geopython#709 for the origin of aws-lambda/container/Dockerfile.

Will revisit this in a future sprint (say Sprint 52?)

[jvanulde]

Note that since we don't deploy on Lambda any longer we don't need to worry about this.

[anthonyfok]

Note that since we don't deploy on Lambda any longer we don't need to worry about this.

Thanks so much Joost! I was wondering about that ('cause it was mentioned at our cloud tech meetings) but wasn't sure of the details.

I guess what is left to do in this PR is to (1) apply the change to the correct Dockerfile, and (2) submit a PR upstream, and then we can close this PR. Postponing this till we have more free time. :-)