add docker.sock from host in docker run

Author: sandeepgupta12

.github/scripts/ppc64le/self-hosted-builder/[email protected]

@@ -21,6 +21,7 @@ ExecStartPre=-/usr/local/bin/gh_cat_token.sh /etc/actions-runner/%i/ghtoken.env
 ExecStart=/usr/bin/docker run \
               --env-file=/etc/actions-runner/%i/env \
               --volume /etc/actions-runner/%i/ghtoken.txt:/run/runner_secret \
+              --volume /var/run/docker.sock:/var/run/docker.sock \
               --init \
               --interactive \
               --name=actions-runner.%i \