Lightweight docker image for running and packaging python-lambda code.

This is based on the super useful python-lambda library:

https://github.com/nficano/python-lambda/

An example of a usable project can be found in the example/ directory. This example lambda function takes a JSON input file like the provided event.json and returns an ASCII-art version of the text.

$ cd example/

The Dockerfile in the example directory loads the current workspace into the image and installs dependencies from the requirements.txt file:

$ cat Dockerfile
FROM kilna/alpine-aws-python-lambda
COPY . /workspace
RUN pip install -r requirements.txt

To build a docker image called example-lambda-image with the lambda function in it, run:

$ docker build --tag example-lambda-image .

If you want to execute the lambda function against the event.json input file:

$ docker run example-lambda-image lambda invoke
  _  _         _   _                                    _      _   _
 | || |  ___  | | | |  ___        __ __ __  ___   _ _  | |  __| | | |
 | __ | / -_) | | | | / _ \  _    \ V  V / / _ \ | '_| | | / _` | |_|
 |_||_| \___| |_| |_| \___/ ( )    \_/\_/  \___/ |_|   |_| \__,_| (_)
                            |/

If you would like to see if your lambda function builds properly, run:

$ docker run example-lambda-image lambda build

If you would like to get a ZIP file of the lambda function suitable for uploading to Amazon, and the build log in one command:

$ docker run example-lambda-image sh -c 'rm -rf build.log dist || true && lambda build &>build.log && tar -c build.log dist' | tar -x -v
build.log
dist/
dist/2017-09-01-003647-example-lambda.zip