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Package for accessing a Docker v2 registry

Project description


asyncio port of dxf


The aiodxf command-line tool uses the following environment variables:

  • DXF_HOST - Host where Docker registry is running.
  • DXF_INSECURE - Set this to 1 if you want to connect to the registry using http rather than https (which is the default).
  • DXF_USERNAME - Name of user to authenticate as.
  • DXF_PASSWORD - User's password.
  • DXF_AUTHORIZATION - HTTP Authorization header value.
  • DXF_AUTH_HOST - If set, always perform token authentication to this host, overriding the value returned by the registry.
  • DXF_PROGRESS - If this is set to 1, a progress bar is displayed (on standard error) during push-blob and pull-blob. If this is set to 0, a progress bar is not displayed. If this is set to any other value, a progress bar is only displayed if standard error is a terminal.
  • DXF_BLOB_INFO - Set this to 1 if you want pull-blob to prepend each blob with its digest and size (printed in plain text, separated by a space and followed by a newline).
  • DXF_CHUNK_SIZE - Number of bytes pull-blob should download at a time. Defaults to 8192.
  • DXF_SKIPTLSVERIFY - Set this to 1 to skip TLS certificate verification.
  • DXF_TLSVERIFY - Optional path to custom CA bundle to use for TLS verification.

You can use the following options with dxf. Supply the name of the repository you wish to work with in each case as the second argument.

  • aiodxf push-blob <repo> <file> [@alias]

    Upload a file to the registry and optionally give it a name (alias). The blob's hash is printed to standard output.

    The hash or the alias can be used to fetch the blob later using pull-blob.

  • aiodxf pull-blob <repo> <hash>|<@alias>...

    Download blobs from the registry to standard output. For each blob you can specify its hash, prefixed by sha256: (remember the registry is content-addressable) or an alias you've given it (using push-blob or set-alias).

  • aiodxf blob-size <repo> <hash>|<@alias>...

    Print the size of blobs in the registry. If you specify an alias, the sum of all the blobs it points to will be printed.

  • aiodxf del-blob <repo> <hash>|<@alias>...

    Delete blobs from the registry. If you specify an alias the blobs it points to will be deleted, not the alias itself. Use del-alias for that.

  • aiodxf set-alias <repo> <alias> <hash>|<file>...

    Give a name (alias) to a set of blobs. For each blob you can either specify its hash (as printed by get-blob) or, if you have the blob's contents on disk, its filename (including a path separator to distinguish it from a hash).

  • aiodxf get-alias <repo> <alias>...

    For each alias you specify, print the hashes of all the blobs it points to.

  • aiodxf del-alias <repo> <alias>...

    Delete each specified alias. The blobs they point to won't be deleted (use del-blob for that), but their hashes will be printed.

  • aiodxf list-aliases <repo>

    Print all the aliases defined in the repository.

  • aiodxf list-repos

    Print the names of all the repositories in the registry. Not all versions of the registry support this.

  • aiodxf get-digest <repo> <alias>...

    For each alias you specify, print the hash of its configuration blob. For an alias created using dxf, this is the hash of the first blob it points to. For a Docker image tag, this is the same as docker inspect alias --format='{{.Id}}'.


If your registry uses SSL with a self-issued certificate, you'll need to supply dxf with a set of trusted certificate authorities.

You can set the DXF_TLSVERIFY environment variable to the path of a PEM file containing the trusted certificate authority certificates for the command-line tool or pass the tlsverify option to the module.

Authentication tokens

dxf automatically obtains Docker registry authentication tokens using your DXF_USERNAME and DXF_PASSWORD, or DXF_AUTHORIZATION, environment variables as necessary.

However, if you wish to override this then you can use the following command:

  • aiodxf auth <repo> <action>...

    Authenticate to the registry using DXF_USERNAME and DXF_PASSWORD, or DXF_AUTHORIZATION, and print the resulting token.

    action can be pull, push or *.

If you assign the token to the DXF_TOKEN environment variable, for example:

DXF_TOKEN=$(aiodxf auth fred/datalogger pull)

then subsequent dxf commands will use the token without needing DXF_USERNAME and DXF_PASSWORD, or DXF_AUTHORIZATION, to be set.

Note however that the token expires after a few minutes, after which dxf will exit with EACCES.


pip install aiodxf




make test


make lint

Code Coverage

make coverage

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