3mcloud/lambda-packager Docker 镜像 - 轩辕镜像

lambda-packager

Package code for Python and Node AWS Lambda functions using a docker container.

Github Repository

Supported tags and respective Dockerfile links:

• python-3.9, python-latest, latest
• python-3.8
• python-3.7
• python-3.6
• node-14.18, node-latest
• node-12.22

---

Python

TL;DR

Lets say all our code is within a src directory and within that src directory we have a requirements.txt. We want the output to be deployment.zip at the root of our project. Then all we need to do is:

bash
	docker run -it --rm \
        -v $(if ${PWD},${PWD},${CURDIR}):/src \ # First mount our code to the container
		3mcloud/lambda-packager:python-latest

And boom, deployment.zip should be in your repository root.

Note: $(if ${PWD},${PWD},${CURDIR}) is a ternary operator which we use to make it Windows and Mac agnostic with Makefiles.

---

Container Variables

You can change the default behavior of this packager by using the environment variables of the container

---

Examples

Our code is in a directory named code and we have a reqs.txt file within that directory. We want deployment.zip to be at the root level of our project.

bash
	docker run -it --rm \
        -v $(if ${PWD},${PWD},${CURDIR}):/src \ # First mount our project to the container
        -e CI_WORKSPACE=/src \ # We will be working with /src
		-e LAMBDA_CODE_DIR=/code \ # The code to be packaged is within /src/code
		-e REQUIREMENTS_FILE=reqs.txt \ # Requirements are in /src/code/reqs.txt
		3mcloud/lambda-packager:python-latest

Alternatively, lets say we only want to mount the code directory and not the entire root of our project:

bash
	docker run -it --rm \
        -v $(if ${PWD},${PWD},${CURDIR})/code:/src \ # First mount our code to the container
		-e LAMBDA_CODE_DIR=/src \ # The code to be packaged is within /src (Note CI_WORKSPACE is /)
		-e REQUIREMENTS_FILE=reqs.txt \ # Requirements are in /src/reqs.txt
        -e ARTIFACT_NAME=/src/deployment.zip \ # We need to save the zip within /src/ since we didn't mount the root level.
		3mcloud/lambda-packager:python-latest

Lasty, we can try to leverage the default values. Lets say all our code is within a src directory and within that src directory we have a requirements.txt. We want the output to be deployment.zip at the root of our project. Then all we need to do is:

bash
	docker run -it --rm \
        -v $(if ${PWD},${PWD},${CURDIR}):/src \ # First mount our code to the container
		3mcloud/lambda-packager:python-latest

---

Node

TL;DR for Node

Make sure:

• your node code is in a folder called src, relative to the working directory
• you have a package.json (and preferrably, also a package-lock.json) in your working directory

bash
docker run -it --rm -v $(pwd):/workspace -w /workspace 3mcloud/lambda-packager:node-12.22

And boom, deployment.zip should be in your repository root.

Container variables for node

You can change the default behavior of this packager by using the environment variables of the container

Examples

See the Examples for Python, except where you see 3mcloud/lambda-packager:python-latest replace that with 3mcloud/lambda-packager:node-12.22

The default behavior of the node packager is to assume that the package.json and package-lock.json are in the same directory as the entry point for your application. For example, your application looks like this:

bash
.
├── app.js
├── package.json

Then just use the defaults as shown in the Examples.

Some projects, however, have a nested structure. If you have a folder structure that looks like this, which was created by sam init:

bash
.
├── README.md
├── __tests__
│   └── unit
│       └── handlers
│           ├── get-all-items.test.js
│           ├── get-by-id.test.js
│           └── put-item.test.js
├── buildspec.yml
├── env.json
├── events
│   ├── event-get-all-items.json
│   ├── event-get-by-id.json
│   └── event-post-item.json
├── package.json
├── src
│   └── handlers
│       ├── get-all-items.js
│       ├── get-by-id.js
│       └── put-item.js
└── template.yml

And you want a package that looks like this on the inside:

bash
.
├── node_modules
└── src

Then use this incantation, from the base folder.

bash
docker run -it --rm -w /test -v $(pwd):/test \
    -e NPM_PACKAGE_FILE=./package.json \
    -e NPM_PACKAGE_LOCK=./package-lock.json \
    -e LAMBDA_CODE_DIR=src \
    -e ARTIFACT_CODE_PREFIX=src \
    3mcloud/lambda-packager:node-12.22