Merge pull request #3871 from edx/feanil/tools-jenkins-docker-capabilities

Install docker on tools jenkins.

docker/build/tools_jenkins/Dockerfile

-FROM edxops/trusty-common:latest
+FROM edxops/xenial-common:latest
 MAINTAINER edxops
 
 USER root

playbooks/roles/tools_jenkins/defaults/main.yml

@@ -77,3 +77,5 @@ jenkins_tools_debian_pkgs:
     - python-pycurl
     - psmisc
     - mysql-client-core-5.6
+
+JENKINS_TOOLS_DOCKER_USER: 'jenkins-docker-proxy'

playbooks/roles/tools_jenkins/meta/main.yml

@@ -9,4 +9,12 @@ dependencies:
     jenkins_deb_url: "https://pkg.jenkins.io/debian-stable/binary/jenkins_{{ jenkins_version }}_all.deb"
     jenkins_custom_plugins: []
     jenkins_bundled_plugins: "{{ jenkins_tools_bundled_plugins }}"
-    jenkins_debian_pkgs: "{{ jenkins_tools_debian_pkgs }}"
+    jenkins_debian_pkgs: "{{ jenkins_tools_debian_pkgs }}"
\ No newline at end of file
+
+  # Needed to be able to build docker images. Used by Docker Image Builder Jobs.
+  - role: user
+    user_info:
+        - name: '{{ JENKINS_TOOLS_DOCKER_USER }}'
+  - role: docker-tools
+    docker_users:
+        - '{{ JENKINS_TOOLS_DOCKER_USER }}'

playbooks/roles/tools_jenkins/tasks/main.yml

@@ -19,3 +19,15 @@
   tags:
     - install
     - install:system-requirements
+
+- name: Create sudoers file from template
+  template:
+    dest: "/etc/sudoers.d/99-tools_jenkins"
+    src: "99-tools-jenkins.j2"
+    owner: "root"
+    group: "root"
+    mode: "0440"
+    validate: 'visudo -cf %s'
+  tags:
+    - install
+    - install:configuration

playbooks/roles/tools_jenkins/templates/99-tools-jenkins.j2

+{{ jenkins_user }} ALL=({{ JENKINS_TOOLS_DOCKER_USER }}) SETENV:NOPASSWD:/usr/bin/docker