diff options
Diffstat (limited to 'doc/guix.texi')
| -rw-r--r-- | doc/guix.texi | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/doc/guix.texi b/doc/guix.texi index adc7fefcae..e52382e976 100644 --- a/doc/guix.texi +++ b/doc/guix.texi @@ -2394,7 +2394,7 @@ what you should use in this case (@pxref{Invoking guix copy}). @cindex nar, archive format @cindex normalized archive (nar) -Archives are stored in the ``normalized archive'' or ``nar'' format, which is +By default archives are stored in the ``normalized archive'' or ``nar'' format, which is comparable in spirit to `tar', but with differences that make it more appropriate for our purposes. First, rather than recording all Unix metadata for each file, the nar format only mentions @@ -2410,6 +2410,9 @@ verifies the signature and rejects the import in case of an invalid signature or if the signing key is not authorized. @c FIXME: Add xref to daemon doc about signatures. +Optionally, archives can be exported as a Docker image in the tar +archive format using @code{--format=docker}. + The main options are: @table @code @@ -2438,6 +2441,19 @@ Read a list of store file names from the standard input, one per line, and write on the standard output the subset of these files missing from the store. +@item -f +@item --format=@var{FMT} +@cindex docker, export +@cindex export format +Specify the export format. Acceptable arguments are @code{nar} and +@code{docker}. The default is the nar format. When the format is +@code{docker}, recursively export the specified store directory as a +Docker image in tar archive format, as specified in +@uref{https://github.com/docker/docker/blob/master/image/spec/v1.2.md, +version 1.2.0 of the Docker Image Specification}. Using +@code{--format=docker} implies @code{--recursive}. The generated +archive can be loaded by Docker using @command{docker load}. + @item --generate-key[=@var{parameters}] @cindex signing, archives Generate a new key pair for the daemon. This is a prerequisite before |