Dockerfile and docs to run containerized playbooks

Update openshift-ansible's Dockerfile to use playbook2image as a base, with the
goal to run an arbitrary playbook from a container.

The existing Dockerfile is moved to Dockerfile.rhel7 for the productized version
and will be updated to use playbook2image later.

.dockerignore

@@ -0,0 +1,8 @@
+.*
+bin
+docs
+test
+utils
+**/*.md
+*.spec
+setup*

Dockerfile

@@ -1,26 +1,33 @@
-FROM rhel7
+# Using playbook2image as a base
+# See https://github.com/aweiteka/playbook2image for details on the image
+# including documentation for the settings/env vars referenced below
+FROM docker.io/aweiteka/playbook2image:latest
 
-MAINTAINER Troy Dawson <tdawson@redhat.com>
+MAINTAINER OpenShift Team <dev@lists.openshift.redhat.com>
 
-LABEL Name="openshift3/installer"
-LABEL Vendor="Red Hat" License=GPLv2+
-LABEL Version="v3.1.1.901"
-LABEL Release="6"
-LABEL BZComponent="aos3-installation-docker"
-LABEL Architecture="x86_64"
-LABEL io.k8s.description="Ansible code and playbooks for installing Openshift Container Platform." \
-      io.k8s.display-name="Openshift Installer" \
-      io.openshift.tags="openshift,installer"
+LABEL name="openshift-ansible" \
+      summary="OpenShift's installation and configuration tool" \
+      description="A containerized openshift-ansible image to let you run playbooks to install, upgrade, maintain and check an OpenShift cluster" \
+      url="https://github.com/openshift/openshift-ansible" \
+      io.k8s.display-name="openshift-ansible" \
+      io.k8s.description="A containerized openshift-ansible image to let you run playbooks to install, upgrade, maintain and check an OpenShift cluster" \
+      io.openshift.expose-services="" \
+      io.openshift.tags="openshift,install,upgrade,ansible"
 
-RUN INSTALL_PKGS="atomic-openshift-utils" && \
-    yum install -y --enablerepo=rhel-7-server-ose-3.2-rpms $INSTALL_PKGS && \
-    rpm -V $INSTALL_PKGS && \
-    yum clean all
+# The playbook to be run is specified via the PLAYBOOK_FILE env var.
+# This sets a default of openshift_facts.yml as it's an informative playbook
+# that can help test that everything is set properly (inventory, sshkeys)
+ENV PLAYBOOK_FILE=playbooks/byo/openshift_facts.yml \
+    OPTS="-v" \
+    INSTALL_OC=true
 
-# Expect user to mount a workdir for container output (installer.cfg, hosts inventory, ansible log)
-VOLUME /var/lib/openshift-installer/
-WORKDIR /var/lib/openshift-installer/
+# playbook2image's assemble script expects the source to be available in
+# /tmp/src (as per the source-to-image specs) so we import it there
+ADD . /tmp/src
 
-RUN mkdir -p /var/lib/openshift-installer/
+# Running the 'assemble' script provided by playbook2image will install
+# dependencies specified in requirements.txt and install the 'oc' client
+# as per the INSTALL_OC environment setting above
+RUN /usr/libexec/s2i/assemble
 
-ENTRYPOINT ["/usr/bin/atomic-openshift-installer", "-c", "/var/lib/openshift-installer/installer.cfg", "--ansible-log-path", "/var/lib/openshift-installer/ansible.log"]
+CMD [ "/usr/libexec/s2i/run" ]

Dockerfile.rhel7

@@ -0,0 +1,26 @@
+FROM rhel7
+
+MAINTAINER Troy Dawson <tdawson@redhat.com>
+
+LABEL Name="openshift3/installer"
+LABEL Vendor="Red Hat" License=GPLv2+
+LABEL Version="v3.1.1.901"
+LABEL Release="6"
+LABEL BZComponent="aos3-installation-docker"
+LABEL Architecture="x86_64"
+LABEL io.k8s.description="Ansible code and playbooks for installing Openshift Container Platform." \
+      io.k8s.display-name="Openshift Installer" \
+      io.openshift.tags="openshift,installer"
+
+RUN INSTALL_PKGS="atomic-openshift-utils" && \
+    yum install -y --enablerepo=rhel-7-server-ose-3.2-rpms $INSTALL_PKGS && \
+    rpm -V $INSTALL_PKGS && \
+    yum clean all
+
+# Expect user to mount a workdir for container output (installer.cfg, hosts inventory, ansible log)
+VOLUME /var/lib/openshift-installer/
+WORKDIR /var/lib/openshift-installer/
+
+RUN mkdir -p /var/lib/openshift-installer/
+
+ENTRYPOINT ["/usr/bin/atomic-openshift-installer", "-c", "/var/lib/openshift-installer/installer.cfg", "--ansible-log-path", "/var/lib/openshift-installer/ansible.log"]

README.md

@@ -74,6 +74,9 @@ you are not running a stable release.
       - [OpenShift Enterprise](https://docs.openshift.com/enterprise/latest/install_config/install/advanced_install.html)
       - [OpenShift Origin](https://docs.openshift.org/latest/install_config/install/advanced_install.html)
 
+## Containerized OpenShift Ansible
+
+See [README_CONTAINER_IMAGE.md](README_CONTAINER_IMAGE.md) for information on how to package openshift-ansible as a container image.
 
 ## Installer Hooks