buildx is an extension to the Docker CLI that provides the BuildKit backend and additional capabilities. To resolve this issue, you need ...
buildx
is an extension to the Docker CLI that provides the BuildKit backend and additional capabilities. To resolve this issue, you need to install or fix the buildx
component.
Steps to Install or Fix the buildx
Component
Step 1: Install or Update Docker CLI (Docker 19.03 or Later)
buildx
is included with Docker versions 19.03 and later, so ensure you have an appropriate version of Docker installed.
Check Docker version:
You need Docker 19.03 or later for
buildx
support.Update Docker (if necessary):
On Debian/Ubuntu:
On macOS (via Docker Desktop), use the Docker Desktop app to check for updates.
On Windows (via Docker Desktop), use the Docker Desktop app to check for updates.
Step 2: Manually Install or Enable buildx
If you already have Docker 19.03 or later but are still facing issues, you might need to install or enable buildx
.
Install Docker Buildx (if it’s missing):
Docker Buildx comes as a separate plugin, and sometimes it may need to be installed or enabled manually.
Follow these steps:
For Linux:
Download the
buildx
binary from the official Docker GitHub repository.Verify the installation:
- For macOS and Windows:
- If you're using Docker Desktop (macOS/Windows),
buildx
should be included in your installation. Make sure you're using a version of Docker Desktop that includesbuildx
. If it's still missing, consider reinstalling Docker Desktop.
- If you're using Docker Desktop (macOS/Windows),
Enable Buildx (if needed):
Once
buildx
is installed, you can enable it as the default builder by running:This will create and use a new builder instance that is linked to Docker BuildKit.
Verify
buildx
installation:After enabling or installing
buildx
, check that it's working correctly:This command should list available builders. If it returns successfully, you are ready to start building images with BuildKit.
Step 3: Use buildx
to Build Images
Now that you've installed and configured buildx
, you can start using it for builds:
This command will use the buildx
builder to build the Docker image using BuildKit features.
Step 4: Optional – Multi-Platform Builds with buildx
buildx
is especially useful for building multi-platform images. To build images for multiple platforms (e.g., linux/amd64
, linux/arm64
), you can use the following command:
This builds the image for both amd64
and arm64
architectures.
Conclusion
To resolve the error, ensure that your Docker version is up-to-date (19.03 or later) and that the buildx
component is installed and enabled. After following the steps to install and configure buildx
, you will be able to use Docker BuildKit features for building images. If you're still encountering issues, consider reinstalling Docker or ensuring your environment variables are properly configured.
COMMENTS