Bug 1649168: Add a new docker-image with the tools for pushing to try; r=rail

Differential Revision: https://phabricator.services.mozilla.com/D82820

taskcluster/ci/docker-image/kind.yml

@@ -210,3 +210,6 @@ jobs:
         symbol: I(system-symbols-mac)
     system-symbols-win:
         symbol: I(system-symbols-win)
+    push-to-try:
+        symbol: I(push-to-try)
+        parent: debian10-base

taskcluster/docker/push-to-try/Dockerfile

@@ -0,0 +1,22 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+FROM $DOCKER_IMAGE_PARENT
+
+VOLUME /builds/worker/checkouts
+VOLUME /builds/worker/workspace
+VOLUME /builds/worker/tooltool-cache
+
+RUN apt-get update && \
+    apt-get install \
+      openssh-client
+
+COPY known_hosts /etc/ssh/ssh_known_hosts
+COPY hgrc /etc/mercurial/hgrc.d/push-to-try.rc
+
+RUN hg clone -r 19a77a5d7b2a90ba225cf5015afd1ac44787abec https://hg.mozilla.org/hgcustom/version-control-tools /builds/worker/.mozbuild/version-control-tools
+
+# Create directory for scripts to put an hg config in, for configuring ssh
+RUN mkdir /builds/worker/.config/hg
+RUN chown -R worker:worker /builds/worker/.config/hg

taskcluster/docker/push-to-try/hgrc

@@ -0,0 +1,2 @@
+[extensions]
+push-to-try = ~/.mozbuild/version-control-tools/hgext/push-to-try

taskcluster/docker/push-to-try/known_hosts

@@ -0,0 +1,2 @@
+hg.mozilla.org ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAACAQDEsS2fK+TVkHl4QvvOHB6R5xxngsSYJR+pA4+xDhw4mZT9tgCRU9BBG3LazSLp6PUxnpfok78475/tx6Z8QwbTyUTmLElZ9Z9eJzjaGz/olHzQSWv0VB3kT+VZt0LK7pEuaG+Ph/qwxbtUZZOApYLEvu8uctDlS66doofxZylbsgl1kpRQ5HNu+/DgVo9K9dyMOm9OLoy4tXHSE5pofn4tKYdFRa2lt6OVtIP5/hKNb2i0+JmgM8C3bJTPvzJ4C8p2h83ro29XPUkNAfWrgD5CmAPPqHFXyefDCfdefcvI8B8Za9v4j4LynBDZHsGfII+wIfzyLIxy9K6Op6nqDZgCciBRdgxh4uZQINEhB/JJP03Pxo42ExdG28oU3aL8kRRTORT5ehFtImFfr9QESHaUnbVzBbU5DmOB5voYDMle3RgyY+RXJ7+4OxjLRnJvGks9QCn8QrIvabs/PTCnenI8+yDhMlLUkWTiR4JK8vDBYB2Rm++EmVsN9WjllfDNg3Aj1aYe8XiBD4tS+lg7Ur4rJL8X20H4yMvq56sQ0qfH8PCIQGyGL725E7Yuwj/MHvou5xrPM/Lqo/MtX5T2njrzkeaBmI/zFJaLwbphdrwmrzepbcim7OYJFF2pz8u56KDPD1pUQ7C1gEIAx/4mHiDOGCYooSvyfD+JRdjkZUZMiQ==
+hg.mozilla.org ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGuRsL+/OrvIekv3iBST1zdVBLBuh/DMIj+ZN72N9a0g