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dockerTools: add finalImageName parameter for pullImage

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This commit is contained in:
Jaka Hudoklin 2019-03-26 10:35:21 +01:00
parent c10bc73988
commit 468df177c4
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4 changed files with 28 additions and 13 deletions
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23
doc/functions/dockertools.xml
View File

@ -417,10 +417,11 @@ pkgs.dockerTools.buildLayeredImage {
pullImage {
imageName = "nixos/nix"; <co xml:id='ex-dockerTools-pullImage-1' />
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' />
finalImageName = "nix"; <co xml:id='ex-dockerTools-pullImage-3' />
finalImageTag = "1.11"; <co xml:id='ex-dockerTools-pullImage-4' />
sha256 = "0mqjy3zq2v6rrhizgb9nvhczl87lcfphq9601wcprdika2jz7qh8"; <co xml:id='ex-dockerTools-pullImage-5' />
os = "linux"; <co xml:id='ex-dockerTools-pullImage-6' />
arch = "x86_64"; <co xml:id='ex-dockerTools-pullImage-7' />
}
</programlisting>
</example>
@ -451,6 +452,14 @@ sha256:20d9485b25ecfd89204e843a962c1bd70e9cc6858d65d7f5fadc340246e2116b
</para>
</callout>
<callout arearefs='ex-dockerTools-pullImage-3'>
<para>
<varname>finalImageName</varname>, if specified, this is the name of the
image to be created. Note it is never used to fetch the image since we
prefer to rely on the immutable digest ID. By default it's equal to
<varname>imageName</varname>.
</para>
</callout>
<callout arearefs='ex-dockerTools-pullImage-4'>
<para>
<varname>finalImageTag</varname>, if specified, this is the tag of the
image to be created. Note it is never used to fetch the image since we
@ -458,19 +467,19 @@ sha256:20d9485b25ecfd89204e843a962c1bd70e9cc6858d65d7f5fadc340246e2116b
<literal>latest</literal>.
</para>
</callout>
<callout arearefs='ex-dockerTools-pullImage-4'>
<callout arearefs='ex-dockerTools-pullImage-5'>
<para>
<varname>sha256</varname> is the checksum of the whole fetched image. This
argument is required.
</para>
</callout>
<callout arearefs='ex-dockerTools-pullImage-5'>
<callout arearefs='ex-dockerTools-pullImage-6'>
<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'>
<callout arearefs='ex-dockerTools-pullImage-7'>
<para>
<varname>arch</varname>, if specified, is the cpu architecture of the
fetched image. By default it's <literal>x86_64</literal>.

4
nixos/tests/docker-tools.nix
View File

@ -34,8 +34,8 @@ import ./make-test.nix ({ pkgs, ... }: {
# To test the pullImage tool
$docker->succeed("docker load --input='${pkgs.dockerTools.examples.nixFromDockerHub}'");
$docker->succeed("docker run --rm nixos/nix:2.2.1 nix-store --version");
$docker->succeed("docker rmi nixos/nix:2.2.1");
$docker->succeed("docker run --rm nix:2.2.1 nix-store --version");
$docker->succeed("docker rmi nix:2.2.1");
# To test runAsRoot and entry point
$docker->succeed("docker load --input='${pkgs.dockerTools.examples.nginx}'");

11
pkgs/build-support/docker/default.nix
View File

@ -45,13 +45,18 @@ rec {
, sha256
, os ? "linux"
, arch ? "amd64"
# This is used to set name to the pulled image
, finalImageName ? imageName
# This used to set a tag to the pulled image
, finalImageTag ? "latest"
, name ? fixName "docker-image-${imageName}-${finalImageTag}.tar"
, name ? fixName "docker-image-${finalImageName}-${finalImageTag}.tar"
}:
runCommand name {
inherit imageName imageDigest;
inherit imageDigest;
imageName = finalImageName;
imageTag = finalImageTag;
impureEnvVars = pkgs.stdenv.lib.fetchers.proxyImpureEnvVars;
outputHashMode = "flat";
@ -62,7 +67,7 @@ rec {
SSL_CERT_FILE = "${pkgs.cacert.out}/etc/ssl/certs/ca-bundle.crt";
sourceURL = "docker://${imageName}@${imageDigest}";
destNameTag = "${imageName}:${finalImageTag}";
destNameTag = "${finalImageName}:${finalImageTag}";
} ''
skopeo --override-os ${os} --override-arch ${arch} copy "$sourceURL" "docker-archive://$out:$destNameTag"
'';

3
pkgs/build-support/docker/examples.nix
View File

@ -88,8 +88,9 @@ rec {
nixFromDockerHub = pullImage {
imageName = "nixos/nix";
imageDigest = "sha256:85299d86263a3059cf19f419f9d286cc9f06d3c13146a8ebbb21b3437f598357";
sha256 = "0vnp3mhpk4ny3xa3cgngqsargnmvfgld54d5sn4b5av6yqzzp67z";
sha256 = "07q9y9r7fsd18sy95ybrvclpkhlal12d30ybnf089hq7v1hgxbi7";
finalImageTag = "2.2.1";
finalImageName = "nix";
};
# 5. example of multiple contents, emacs and vi happily coexisting