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AWS Lambda Functions - Docker

This repository is a Plug and Play template to create containerized AWS Lambda Functions. The documentation contains:

  1. Descriptions of the files
  2. Instructions to use the template
  3. Instructions to test the container locally

Content Details

File Name Description
Dockerfile The dockerfile used to create the docker image
app.py The code that we want to run in lambda
requirements.txt The dependencies required for our code to run

How to use it as Plug & Play?

  1. On every lambda trigger, the handler function in the app.py file will be executed. Plug the code into the app.py file and make calls to respective modules in the handler function.
  2. Add the required dependencies to the requirements.txt file.

Testing the Lambda Function container

Step 01: Build the docker image of the lambda function

Run the following command in the directory with the Dockerfile

 docker build --network=host -t lambda:v1 .

Check the container with the following command

docker images

Step 02: Run the lambda function container

Run the following command.

docker run --network=host --name=lambda lambda:v1

This will create the lambda function container. Now your container is up and running to process the invocation.

Step 03: Invoke your lambda function

From another terminal, please execute the below command.

curl -XPOST "http://localhost:8080/2015-03-31/functions/function/invocations" -d '{"test": "payload"}'

This should return a response similar to the following:

{"statusCode": 200, "requestId": "49f8b661-d119-4b54-ad19-ca7591860ef3", "request": {"test": "payload"}}

Author: Pranay Chandekar