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| author | Nick Novitski <nick@expo.io> | 2018-06-12 17:56:13 -0700 |
|---|---|---|
| committer | Nick Novitski <nick@expo.io> | 2018-07-27 12:29:31 -0700 |
| commit | c58b11d229f63a85ee1d05fc9940a20fa2b73975 (patch) | |
| tree | 4571c6b5da076372c6bd6d44bd6e28c502810cee /doc/functions.xml | |
| parent | 64c6ff3dfc64ec49114090c5b91d617e6b06af69 (diff) | |
dockerTools.pullImage: control OS and architecture
Diffstat (limited to 'doc/functions.xml')
| -rw-r--r-- | doc/functions.xml | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/doc/functions.xml b/doc/functions.xml index c23f6aa25967..2a9cc44d5c5b 100644 --- a/doc/functions.xml +++ b/doc/functions.xml @@ -649,6 +649,8 @@ merge:"diff3" imageDigest = "sha256:20d9485b25ecfd89204e843a962c1bd70e9cc6858d65d7f5fadc340246e2116b"; <co xml:id='ex-dockerTools-pullImage-2' /> finalImageTag = "1.11"; <co xml:id='ex-dockerTools-pullImage-3' /> sha256 = "0mqjy3zq2v6rrhizgb9nvhczl87lcfphq9601wcprdika2jz7qh8"; <co xml:id='ex-dockerTools-pullImage-4' /> + os = "linux"; <co xml:id='ex-dockerTools-pullImage-5' /> + arch = "x86_64"; <co xml:id='ex-dockerTools-pullImage-6' /> } </programlisting> </example> @@ -664,9 +666,15 @@ merge:"diff3" <callout arearefs='ex-dockerTools-pullImage-2'> <para> <varname>imageDigest</varname> specifies the digest of the image to be - downloaded. Skopeo can be used to get the digest of an image + downloaded. Skopeo can be used to get the digest of an image, with its + <varname>inspect</varname> subcommand. Since a given <varname>imageName</varname> + may transparently refer to a manifest list of images which support + multiple architectures and/or operating systems, supply the `--override-os` + and `--override-arch` arguments to specify exactly which image you + want. By default it will match the OS and architecture of the host the + command is run on. <programlisting> - $ skopeo inspect docker://docker.io/nixos/nix:1.11 | jq -r '.Digest' + $ nix-shell --packages skopeo jq --command "skopeo --override-os linux --override-arch x86_64 inspect docker://docker.io/nixos/nix:1.11 | jq -r '.Digest'" sha256:20d9485b25ecfd89204e843a962c1bd70e9cc6858d65d7f5fadc340246e2116b </programlisting> This argument is required. @@ -686,6 +694,18 @@ merge:"diff3" This argument is required. </para> </callout> + <callout arearefs='ex-dockerTools-pullImage-5'> + <para> + <varname>os</varname>, if specified, is the operating system of the fetched image. + By default it's <literal>linux</literal>. + </para> + </callout> + <callout arearefs='ex-dockerTools-pullImage-6'> + <para> + <varname>arch</varname>, if specified, is the cpu architecture of the fetched image. + By default it's <literal>x86_64</literal>. + </para> + </callout> </calloutlist> </section> |