buildah-push - Push an image from local storage to elsewhere.
buildah push [options] image [destination]
Pushes an image from local storage to a specified destination, decompressing and recompessing layers as needed.
Image stored in local container/storage
The DESTINATION is a location to store container images. If omitted, the source image parameter will be reused as destination.
The Image "DESTINATION" uses a "transport":"details" format. Multiple transports are supported:
dir:path An existing local directory path storing the manifest, layer tarballs and signatures as individual files. This is a non-standardized format, primarily useful for debugging or noninvasive container inspection.
docker://docker-reference
An image in a registry implementing the "Docker Registry HTTP API V2". By default, uses the authorization state in $XDG\_RUNTIME\_DIR/containers/auth.json, which is set using (buildah login). If the authorization state is not found there, $HOME/.docker/config.json is checked, which is set using (docker login).
If docker-reference does not include a registry name, the image will be pushed to a registry running on localhost.
docker-archive:path[:docker-reference]
An image is stored in the docker save formatted file. docker-reference is only used when creating such a file, and it must not contain a digest.
docker-daemon:docker-reference An image docker_reference stored in the docker daemon internal storage. If docker_reference does not begin with a valid registry name (a domain name containing "." or the reserved name "localhost") then the default registry name "docker.io" will be prepended. docker_reference must contain either a tag or a digest. Alternatively, when reading images, the format can also be docker-daemon:algo:digest (an image ID).
oci:path:tag An image tag in a directory compliant with "Open Container Image Layout Specification" at path.
oci-archive:path:tag An image tag in a tar archive compliant with "Open Container Image Layout Specification" at path.
If the transport part of DESTINATION is omitted, "docker://" is assumed.
--authfile path
Path of the authentication file. Default is ${XDG_RUNTIME_DIR}/containers/auth.json, which is set using buildah login.
If the authorization state is not found there, $HOME/.docker/config.json is checked, which is set using docker login.
--cert-dir path
Use certificates at path (*.crt, *.cert, *.key) to connect to the registry. Default certificates directory is /etc/containers/certs.d.
--creds creds
The [username[:password]] to use to authenticate with the registry if required. If one or both values are not supplied, a command line prompt will appear and the value can be entered. The password is entered without echo.
--digestfile Digestfile
After copying the image, write the digest of the resulting image to the file.
--disable-compression, -D
Don't compress copies of filesystem layers which will be pushed.
--encryption-key key
The [protocol:keyfile] specifies the encryption protocol, which can be JWE (RFC7516), PGP (RFC4880), and PKCS7 (RFC2315) and the key material required for image encryption. For instance, jwe:/path/to/key.pem or pgp:admin@example.com or pkcs7:/path/to/x509-file.
--format, -f
Manifest Type (oci, v2s1, or v2s2) to use when saving image to directory using the 'dir:' transport (default is manifest type of source)
--quiet, -q
When writing the output image, suppress progress output.
--remove-signatures
Don't copy signatures when pushing images.
--sign-by fingerprint
Sign the pushed image using the GPG key that matches the specified fingerprint.
--tls-verify bool-value
Require HTTPS and verify certificates when talking to container registries (defaults to true)
This example pushes the image specified by the imageID to a local directory in docker format.
# buildah push imageID dir:/path/to/image
This example pushes the image specified by the imageID to a local directory in oci format.
# buildah push imageID oci:/path/to/layout:image:tag
This example pushes the image specified by the imageID to a tar archive in oci format.
# buildah push imageID oci-archive:/path/to/archive:image:tag
This example pushes the image specified by the imageID to a container registry named registry.example.com.
# buildah push imageID docker://registry.example.com/repository:tag
This example pushes the image specified by the imageID to a container registry named registry.example.com and saves the digest in the specified digestfile.
# buildah push --digestfile=/tmp/mydigest imageID docker://registry.example.com/repository:tag
This example works like docker push, assuming registry.example.com/my_image is a local image.
# buildah push registry.example.com/my_image
This example pushes the image specified by the imageID to a private container registry named registry.example.com with authentication from /tmp/auths/myauths.json.
# buildah push --authfile /tmp/auths/myauths.json imageID docker://registry.example.com/repository:tag
This example pushes the image specified by the imageID and puts into the local docker container store.
# buildah push imageID docker-daemon:image:tag
This example pushes the image specified by the imageID and puts it into the registry on the localhost while turning off tls verification.
# buildah push --tls-verify=false imageID docker://localhost:5000/my-imageID
This example pushes the image specified by the imageID and puts it into the registry on the localhost using credentials and certificates for authentication.
# buildah push --cert-dir ~/auth --tls-verify=true --creds=username:password imageID docker://localhost:5000/my-imageID
BUILD_REGISTRY_SOURCES
BUILD_REGISTRY_SOURCES, if set, is treated as a JSON object which contains
lists of registry names under the keys insecureRegistries,
blockedRegistries, and allowedRegistries.
When pushing an image to a registry, if the portion of the destination image
name that corresponds to a registry is compared to the items in the
blockedRegistries list, and if it matches any of them, the push attempt is
denied. If there are registries in the allowedRegistries list, and the
portion of the name that corresponds to the registry is not in the list, the
push attempt is denied.
TMPDIR The TMPDIR environment variable allows the user to specify where temporary files are stored while pulling and pushing images. Defaults to '/var/tmp'.
registries.conf (/etc/containers/registries.conf)
registries.conf is the configuration file which specifies which container registries should be consulted when completing image names which do not include a registry or domain portion.
policy.json (/etc/containers/policy.json)
Signature policy file. This defines the trust policy for container images. Controls which container registries can be used for image, and whether or not the tool should trust the images.
buildah(1), buildah-login(1), containers-policy.json(5), docker-login(1), containers-registries.conf(5)