# lambci/docker-lambda

Docker images and test runners that replicate the live AWS Lambda environment

Repository: https://github.com/lambci/docker-lambda
Canonical: https://ross.abutalabs.com/products/docker-lambda
Language: C#
License: MIT
License Family: permissive
Archived: true
Last push: 2023-01-15T21:14:40+00:00

## Health v2 (maintenance only)
Score: 10/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 3751, "days_push": 1326, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, archived
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 5781, forks 409 (observed 2026-08-28T04:09:29.562986+00:00)

## What it is
Docker images and test runners that replicate the live AWS Lambda environment almost identically, including installed libraries, file permissions, environment variables, and context objects. It allows developers to run and test Lambda functions locally or compile native dependencies against the exact library versions present on AWS Lambda.

## Use cases
- test aws lambda functions locally in docker
- replicate aws lambda environment on my machine
- compile native dependencies for lambda deployment
- run lambda handler with test events locally
- emulate lambda invoke api for integration testing
- build lambda layers with matching library versions

## When to choose
- You need to test Lambda functions locally with high fidelity to the real AWS environment
- You want to compile native dependencies against the exact library versions available on AWS Lambda
- You are maintaining a legacy project pinned to these images and cannot migrate yet

## When to avoid
- You are starting a new project - the images are deprecated in favor of AWS' official aws-lambda-base-images
- You need ongoing updates or support - the repository is archived and will not receive further updates
- You only need basic local Lambda invocation without strict environment replication

## Facets
- artifact type: infra-config
- maturity: abandoned
- function: container-runtime, testing, developer-tools, deployment
- domain: cloud-computing, developer-tools, testing
- platform: cross-platform, cli
- tags: aws-lambda, docker-images, local-development, serverless, lambda-emulation, sandboxed-environment, deprecated, devops, docker

## Member repositories
- lambci/docker-lambda (main) score 10

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:29.562986+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:52:50.084771+00:00, confidence not recorded.
  - readme: https://github.com/lambci/docker-lambda (fetched 2026-08-28T04:09:29.562986+00:00, sha e2ebcb29275b)
- Data as of 2026-08-30T08:39:29.467469+00:00.