Build docker images

So that we can deploy gerritbot in the new world of ansible+docker,
we need container images. Build and publish some.

Change-Id: I3b8a9f7d28af0f9098cfb73051976d7666a46a3c

.zuul.yaml

@@ -1,9 +1,61 @@
+- secret:
+    name: gerritbot-opendev-dockerhub
+    data:
+      username: opendevzuul
+      password: !encrypted/pkcs1-oaep
+        - 1lrelk7zn4fl31rF2n/+erP4aYWXWfHMnt7piYyBtfSlbIh3z+u8BIDY5/LXU9bswwxVR
+          IKRmMSME8sH4wE9+DAmsGiiuEuVdq2fKu7jF2doL86EVYsOMYtOJak7jN1l5mOHWn/IZy
+          lKATn/OaAHosX8un30T9pSn4cNCtsdbIRxxjXJUdprZfbcDHAJ5Ezf5PsBs9Szg/SUZWU
+          DLVvAYoTpyYHTHQMCf1idKevAnewrDLtPuIjVf0FWmMsRURBh5HVZILVn6NFCHQZR93ca
+          mzNpQOaw/v/F+hjtKZSFRbuwuOe1st5qK1KLbzb0xYJ0DhM5bIKO/O3gTKwWV30+0rEJC
+          geouNC+qhhVRGAqvA3y1DJZNYcY4lGTYE2hMhaIKBm1tj1UpzbexVU66NTUZ6xAzsq28c
+          D2ffLmVMeNtnZUud1JiwpeHOGB/zwpJJTcJBHI9bzn19NNF9MhnRGbaJUU69goPgc8O17
+          HD18TsHAGm4mJwLNp8zWUb0VMP06v8PHI7clRAK07FUN6Gc7mjdgGoPI1RtLoZ8Fr0Il7
+          vbfU6acyzrH/CIyF5mNvrUBuy3J6QoKElFG2pXGfZj8xKhCTbShT2rZwyZdhgONvjNWIN
+          cY8abkqFpILCTTEtByIs0A02XJLOf9XdK5R3/yPPNhv5OPSfBTwpIgwLsAJqPU=
+
+- job:
+    name: gerritbot-build-opendev-image
+    parent: opendev-build-docker-image
+    description: Build OpenDev Docker images for storyboard webclient
+    vars: &gerritbot_opendev_image_vars
+      zuul_work_dir: src/opendev.org/opendev/gerritbot
+      docker_images:
+        - context: .
+          repository: opendevorg/gerritbot
+          target: gerritbot
+
+- job:
+    name: gerritbot-upload-opendev-image
+    parent: opendev-upload-docker-image
+    description: Build OpenDev gerritbot Docker images and upload to Docker Hub.
+    vars: *gerritbot_opendev_image_vars
+    secrets:
+      - name: docker_credentials
+        secret: gerritbot-opendev-dockerhub
+        pass-to-parent: true
+
+- job:
+    name: gerritbot-promote-opendev-image
+    parent: opendev-promote-docker-image
+    description: Promote previously uploaded gerritbot Docker images.
+    vars: *gerritbot_opendev_image_vars
+    secrets:
+      - name: docker_credentials
+        secret: gerritbot-opendev-dockerhub
+        pass-to-parent: true
+
 - project:
     check:
       jobs:
         - tox-pep8
         - tox-py37
+        - gerritbot-build-opendev-image
     gate:
       jobs:
         - tox-pep8
         - tox-py37
+        - gerritbot-upload-opendev-image
+    promote:
+      jobs:
+        - gerritbot-promote-opendev-image

Dockerfile

@@ -0,0 +1,26 @@
+# Copyright 2019 Red Hat, Inc.
+#
+# This module is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This software is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this software.  If not, see <http://www.gnu.org/licenses/>.
+
+FROM opendevorg/python-builder:3.7 as builder
+
+COPY . /tmp/src
+RUN assemble
+
+FROM opendevorg/python-base:3.7 as gerritbot
+
+COPY --from=builder /output/ /output
+RUN /output/install-from-bindep
+
+CMD ["/usr/local/bin/gerritbot", "/etc/gerritbot/gerritbot.config"]