jobs/master-builds: pass ssh agent sock to docker

Pass the ssh agent to docker for master builds, so we can publish
manuals and other files generated during the builds. This used to work
with the .ssh directory where each lxc had its own key. But we are
changing that to have the keys in jenkins and use the ssh agent, so it
works without additional configuration when adding new nodes/lxcs (such
as the two deb11 lxcs we just added).

Change-Id: I6dc1fd5d7e81ec135f805562608f06cf03a1baeb

jobs/master-builds.yml

@@ -36,15 +36,16 @@
               -e OSMO_GSM_MANUALS_DIR="/opt/osmo-gsm-manuals" \
               -e PARALLEL_MAKE="$PARALLEL_MAKE" \
               -e PUBLISH="1" \
+              -e SSH_AUTH_SOCK=/ssh-agent \
               -e WITH_MANUALS="1" \
               -w /build -i -u build \
+              -v $(readlink -f $SSH_AUTH_SOCK):/ssh-agent \
               -v "$PWD:/build" \
               -v "$ARTIFACT_STORE:/artifact_store" \
               -v "$HOME/.ssh:/home/build/.ssh:ro" \
     docker_img: '$USER/debian-buster-jenkins'
     timeout_cmd: '/usr/bin/timeout 30m'
     cmd: '{docker_run} {docker_img} {timeout_cmd} /build/contrib/jenkins.sh'
-    wrappers: []
     trigger:
     email: jenkins-notifications@lists.osmocom.org laforge@gnumonks.org
     git_base_url: https://gerrit.osmocom.org
@@ -531,6 +532,9 @@
        - email:
            recipients: '{obj:email}'
            send-to-individuals: true
-    wrappers: '{obj:wrappers}'
+    wrappers:
+       - ssh-agent-credentials:
+           users:
+           - 97634b9d-a867-4f6d-825d-1da99813e93d
 
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