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When doing a podman images, manifests lists look just like images, so it is logical that users would assume that they can just podman push them to a registry. The problem is we throw out weird errors when this happens and users need to somehow figure out this is a manifest list rather then an image, and frankly the user will not understand the difference. This PR will make podman push just do the right thing, by failing over and attempting to push the manifest if it fails to push the image. Fix up handling of manifest push Protocol should bring back a digest string, which can either be printed or stored in a file. We should not reimplement the manifest push setup code in the tunnel code but take advantage of the api path, to make sure remote and local work the same way. Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
166 lines
6.9 KiB
Markdown
166 lines
6.9 KiB
Markdown
% podman-push(1)
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## NAME
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podman\-push - Push an image, manifest list or image index from local storage to elsewhere
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## SYNOPSIS
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**podman push** [*options*] *image* [*destination*]
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**podman image push** [*options*] *image* [*destination*]
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## DESCRIPTION
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Pushes an image, manifest list or image index from local storage to a specified
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destination. Push is mainly used to push images to registries, however
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**podman push** can be used to save images to tarballs and directories using the
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following transports:
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**dir:**, **docker-archive:**, **docker-daemon:** and **oci-archive:**.
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## Image storage
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Images are pushed from those stored in local image storage.
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## DESTINATION
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The DESTINATION is a location to store container images
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The Image "DESTINATION" uses a "transport":"details" format.
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If a transport is not given, podman push will attempt to push
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to a registry.
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Multiple transports are supported:
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**dir:**_path_
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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.
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$ podman push myimage dir:/tmp/myimage
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**docker://**_docker-reference_
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An image in a registry implementing the "Docker Registry HTTP API V2". By default, uses the authorization state in `$XDG_RUNTIME_DIR/containers/auth.json`, which is set using `(podman login)`. If the authorization state is not found there, `$HOME/.docker/config.json` is checked, which is set using `(docker login)`.
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$ podman push myimage quay.io/username/myimage
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**docker-archive:**_path_[**:**_docker-reference_]
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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.
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$ podman push myimage docker-archive:/tmp/myimage
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**docker-daemon:**_docker-reference_
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An image in _docker-reference_ format stored in the docker daemon internal storage. _docker-reference_ must contain a tag.
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$ sudo podman push myimage docker-daemon:docker.io/library/myimage:33
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**oci-archive:**_path_**:**_tag_
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An image _tag_ in a directory compliant with "Open Container Image Layout Specification" at _path_.
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$ podman push myimage oci-archive:/tmp/myimage
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## OPTIONS
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#### **--authfile**=*path*
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Path of the authentication file. Default is ${XDG\_RUNTIME\_DIR}/containers/auth.json, which is set using `podman login`.
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If the authorization state is not found there, $HOME/.docker/config.json is checked, which is set using `docker login`.
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Note: You can also override the default path of the authentication file by setting the REGISTRY\_AUTH\_FILE
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environment variable. `export REGISTRY_AUTH_FILE=path`
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#### **--creds**=*[username[:password]]*
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The [username[:password]] to use to authenticate with the registry if required.
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If one or both values are not supplied, a command line prompt will appear and the
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value can be entered. The password is entered without echo.
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#### **--cert-dir**=*path*
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Use certificates at *path* (\*.crt, \*.cert, \*.key) to connect to the registry.
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Default certificates directory is _/etc/containers/certs.d_. (Not available for remote commands)
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#### **--compress**
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Compress tarball image layers when pushing to a directory using the 'dir' transport. (default is same compression type, compressed or uncompressed, as source)
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Note: This flag can only be set when using the **dir** transport
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#### **--digestfile** *Digestfile*
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After copying the image, write the digest of the resulting image to the file. (Not available for remote commands)
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#### **--disable-content-trust**
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This is a Docker specific option to disable image verification to a Docker
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registry and is not supported by Podman. This flag is a NOOP and provided
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solely for scripting compatibility.
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#### **--format**, **-f**=*format*
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Manifest Type (oci, v2s1, or v2s2) to use when pushing an image to a directory using the 'dir:' transport (default is manifest type of source)
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Note: This flag can only be set when using the **dir** transport
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#### **--quiet**, **-q**
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When writing the output image, suppress progress output
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#### **--remove-signatures**
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Discard any pre-existing signatures in the image
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#### **--sign-by**=*key*
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Add a signature at the destination using the specified key
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#### **--tls-verify**=*true|false*
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Require HTTPS and verify certificates when contacting registries (default: true). If explicitly set to true,
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then TLS verification will be used. If set to false, then TLS verification will not be used. If not specified,
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TLS verification will be used unless the target registry is listed as an insecure registry in registries.conf.
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## EXAMPLE
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This example pushes the image specified by the imageID to a local directory in docker format.
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`# podman push imageID dir:/path/to/image`
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This example pushes the image specified by the imageID to a local directory in oci format.
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`# podman push imageID oci-archive:/path/to/layout:image:tag`
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This example pushes the image specified by the imageID to a container registry named registry.example.com
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`# podman push imageID docker://registry.example.com/repository:tag`
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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.
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`# podman push --digestfile=/tmp/mydigest imageID docker://registry.example.com/repository:tag`
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This example pushes the image specified by the imageID and puts it into the local docker container store
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`# podman push imageID docker-daemon:image:tag`
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This example pushes the alpine image to umohnani/alpine on dockerhub and reads the creds from
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the path given to --authfile
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```
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# podman push --authfile temp-auths/myauths.json alpine docker://docker.io/umohnani/alpine
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Getting image source signatures
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Copying blob sha256:5bef08742407efd622d243692b79ba0055383bbce12900324f75e56f589aedb0
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4.03 MB / 4.03 MB [========================================================] 1s
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Copying config sha256:ad4686094d8f0186ec8249fc4917b71faa2c1030d7b5a025c29f26e19d95c156
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1.41 KB / 1.41 KB [========================================================] 1s
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Writing manifest to image destination
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Storing signatures
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```
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This example pushes the rhel7 image to rhel7-dir with the "oci" manifest type
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```
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# podman push --format oci registry.access.redhat.com/rhel7 dir:rhel7-dir
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Getting image source signatures
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Copying blob sha256:9cadd93b16ff2a0c51ac967ea2abfadfac50cfa3af8b5bf983d89b8f8647f3e4
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71.41 MB / 71.41 MB [======================================================] 9s
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Copying blob sha256:4aa565ad8b7a87248163ce7dba1dd3894821aac97e846b932ff6b8ef9a8a508a
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1.21 KB / 1.21 KB [========================================================] 0s
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Copying config sha256:f1b09a81455c351eaa484b61aacd048ab613c08e4c5d1da80c4c46301b03cf3b
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3.01 KB / 3.01 KB [========================================================] 0s
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Writing manifest to image destination
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Storing signatures
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```
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## SEE ALSO
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podman(1), podman-pull(1), podman-login(1)
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