docker pull cgr.dev/chainguard/node
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Sign inMinimal container image for running NodeJS apps
The image is available on cgr.dev
:
The image specifies a default non-root node
user (UID 65532), and a working directory at /app
, owned by that node
user, and accessible to all users.
It specifies NODE_PORT=3000
by default.
This brief example is derived from our Getting Started with Node guide which is itself based on the Docker Node example. It involves setting up an example Node application, building the application into a container image using the Chainguard Node Image, and then testing the newly-built image.
You can set up our example Node application by cloning the node
directory from our edu-images-demos
repository.
Because the Node demo application code is stored in a repository with other examples, we don’t need to pull down every file from this repository. For this reason, this command includes the --sparse
option. This will initialize a sparse-checkout file, causing the working directory to contain only the files in the root of the repository until the sparse-checkout configuration is modified.
Navigate into the new directory.
To retrieve the files you need for this sample application, run the following git
command.
This modifies the sparse-checkout configuration initialized in the previous git clone
command so that the checkout only consists of the repo’s node
directory.
Navigate into the new node
directory.
From within this directory, run the following command to create a new package.json
file:
Next, install the application dependencies. Specifically, you'll need ronin-server
and ronin-mocks
. These will create a "mock" server that saves JSON data in memory and returns it in subsequent GET requests to the same endpoint.
After setting up the application, it can be built into a container image using the Dockerfile included in the example repository.
This Dockerfile will perform the following actions:
cgr.dev/chainguard/node:latest
image;/app
inside the container;/app
location in the container;npm install
to install production-only dependencies;node
), specifying which script to run.Build the application image with the following command:
Once the build is finished, run the image:
Although the application is running from within a container, this command will cause it to block your terminal we set up a port redirect to receive requests on localhost:8000
as the application waits for connections on port 8000
.
From a new terminal window, run the following command. This will make a POST request to your application sending a JSON payload:
If the connection is successful, you will receive output like this in the terminal where the application is running:
You can now query the same endpoint to receive the data that was stored in memory when you run the previous command:
When you're finished, you can close the application by pressing CTRL+C
(CMD+C
if you're using macOS).
Chainguard Images contain software packages that are direct or transitive dependencies. The following licenses were found in the "latest" version of this image:
Apache-2.0
Artistic-2.0
BSD-2-Clause
GCC-exception-3.1
GPL-2.0-only
GPL-2.0-or-later
GPL-3.0-or-later
For a complete list of licenses, please refer to this Image's SBOM.
Software license agreementProducts
Chainguard Images© 2024 Chainguard, Inc.