diff options
Diffstat (limited to 'nixpkgs/doc/builders/images/dockertools.xml')
| -rw-r--r-- | nixpkgs/doc/builders/images/dockertools.xml | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/nixpkgs/doc/builders/images/dockertools.xml b/nixpkgs/doc/builders/images/dockertools.xml index e7f37fdaaf0..126698d0a9e 100644 --- a/nixpkgs/doc/builders/images/dockertools.xml +++ b/nixpkgs/doc/builders/images/dockertools.xml @@ -166,7 +166,7 @@ hello latest de2bf4786de6 About a minute ago 25.2MB <title>buildLayeredImage</title> <para> - Create a Docker image with many of the store paths being on their own layer to improve sharing between images. + Create a Docker image with many of the store paths being on their own layer to improve sharing between images. The image is realized into the Nix store as a gzipped tarball. Depending on the intended usage, many users might prefer to use <function>streamLayeredImage</function> instead, which this function uses internally. </para> <variablelist> @@ -327,6 +327,27 @@ pkgs.dockerTools.buildLayeredImage { </section> </section> + <section xml:id="ssec-pkgs-dockerTools-streamLayeredImage"> + <title>streamLayeredImage</title> + + <para> + Builds a script which, when run, will stream an uncompressed tarball of a Docker image to stdout. The arguments to this function are as for <function>buildLayeredImage</function>. This method of constructing an image does not realize the image into the Nix store, so it saves on IO and disk/cache space, particularly with large images. + </para> + + <para> + The image produced by running the output script can be piped directly into <command>docker load</command>, to load it into the local docker daemon: + <screen><![CDATA[ +$(nix-build) | docker load + ]]></screen> + </para> + <para> + Alternatively, the image be piped via <command>gzip</command> into <command>skopeo</command>, e.g. to copy it into a registry: + <screen><![CDATA[ +$(nix-build) | gzip --fast | skopeo copy docker-archive:/dev/stdin docker://some_docker_registry/myimage:tag + ]]></screen> + </para> + </section> + <section xml:id="ssec-pkgs-dockerTools-fetchFromRegistry"> <title>pullImage</title> |