Merge branch 'issue-1952' into 'master'

Fixed #1952 docker ssh connection times can be slow when UseDNS is enabled

See merge request !1208

CHANGELOG

@@ -46,6 +46,9 @@ v 8.0.0 (unreleased)
 v 7.14.1
   - Improve abuse reports management from admin area
   - Fix "Reload with full diff" URL button in compare branch view (Stan Hu)
+  - Disabled DNS lookups for SSH in docker image (Rowan Wookey)
+
+v 7.14.1 (unreleased)
   - Only include base URL in OmniAuth full_host parameter (Stan Hu)
   - Fix Error 500 in API when accessing a group that has an avatar (Stan Hu)
   - Ability to enable SSL verification for Webhooks

docker/Dockerfile

@@ -25,6 +25,9 @@ RUN mkdir -p /opt/gitlab/sv/sshd/supervise \
     && ln -s /opt/gitlab/sv/sshd /opt/gitlab/service \
     && mkdir -p /var/run/sshd
 
+# Disabling use DNS in ssh since it tends to slow connecting
+RUN echo "UseDNS no" >> /etc/ssh/sshd_config
+
 # Prepare default configuration
 RUN ( \
   echo "" && \