add entrypoint; change Dockerfile relative paths

images/installer/Dockerfile

@@ -27,29 +27,39 @@ RUN yum install -y epel-release && yum clean all -y
 RUN yum install -y  --setopt=tsflags=nodocs python-pip python-devel && yum clean all -y
 RUN pip install -Iv ansible==2.2.0.0
 
-COPY ./bin /usr/bin
-COPY ./bin/user_setup /tmp
+COPY ./images/installer/bin /usr/bin
+COPY ./images/installer/bin/user_setup /tmp
 
 RUN mkdir -p /opt/app-root /opt/app-root/etc /opt/app-root/bin
 RUN chmod -R ug+x /opt/app-root/bin /opt/app-root/etc /tmp/user_setup && \
     /tmp/user_setup
 
 # Add files for running as a system container
-COPY ./system-container/root /
+COPY ./images/installer/system-container/root /
 
 # Create a symlink to /opt/app-root/src so that files under /usr/share/ansible are accessible.
 # This is required since the system-container uses by default the playbook under
 # /usr/share/ansible/openshift-ansible.  With this change we won't need to keep two different
 # configurations for the two images.
 RUN mkdir -p /usr/share/ansible/ && ln -s /opt/app-root/src /usr/share/ansible/openshift-ansible
 
+# Make home folder writable in order to let playbooks make changes
+RUN chmod a+rwx -R /opt/app-root/src
+
 RUN INSTALL_PKGS="skopeo openssl java-1.8.0-openjdk-headless httpd-tools" && \
     yum install -y --setopt=tsflags=nodocs $INSTALL_PKGS && \
     rpm -V $INSTALL_PKGS && \
     yum clean all
 
 USER ${USER_UID}
 
+ENV APP_ROOT=/opt/app-root
+ENV USER_NAME=default \
+    USER_UID=1000 \
+    APP_HOME=${APP_ROOT}/src \
+    HOME=${APP_ROOT}/src \
+    PATH=$PATH:${APP_ROOT}/bin
+
 # 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)
@@ -61,9 +71,13 @@ ENV PLAYBOOK_FILE=playbooks/byo/openshift_facts.yml \
 # /tmp/src (as per the source-to-image specs) so we import it there
 ADD . /tmp/src
 
-# Running the 'assemble' script provided by playbook2image will install
+# Running the 'assemble' script will install
 # dependencies specified in requirements.txt and install the 'oc' client
 # as per the INSTALL_OC environment setting above
 RUN /usr/bin/assemble
 
+USER ${USER_UID}
+WORKDIR ${APP_HOME}
+
+ENTRYPOINT [ "/usr/bin/entrypoint" ]
 CMD [ "/usr/bin/run" ]

images/installer/Dockerfile.rhel7

@@ -23,8 +23,6 @@ LABEL name="openshift3/ose-ansible" \
 
 # Playbooks, roles and their dependencies are installed from packages.
 # Unlike in Dockerfile, we don't invoke the 'assemble' script here
-# because all content and dependencies (like 'oc') is already
-# installed via yum.
 USER root
 RUN INSTALL_PKGS="atomic-openshift-utils atomic-openshift-clients python-boto skopeo openssl java-1.8.0-openjdk-headless httpd-tools" && \
     yum repolist > /dev/null && \
@@ -69,4 +67,5 @@ ENV PLAYBOOK_FILE=playbooks/byo/openshift_facts.yml \
 
 WORKDIR ${APP_HOME}
 
+RUN sed "s@${USER_NAME}:x:${USER_UID}:0@${USER_NAME}:x:\${USER_ID}:\${GROUP_ID}@g" /etc/passwd > ${APP_ROOT}/etc/passwd.template
 CMD [ "/usr/bin/run" ]

images/installer/bin/assemble

@@ -8,7 +8,7 @@
 #
 
 if [[ "$1" == "-h" ]]; then
-	# If the 'playbook2image' assemble script is executed with '-h' flag,
+	# If the assemble script is executed with '-h' flag,
 	# print the usage.
 	exec /usr/bin/usage
 fi

images/installer/bin/entrypoint

@@ -0,0 +1,24 @@
+#!/bin/bash -e
+#
+# This file serves as the main entrypoint to the openshift-ansible image.
+#
+# For more information see the documentation:
+#	https://github.com/openshift/source-to-image/blob/master/docs/builder_image.md
+
+
+# Patch /etc/passwd file with the local user info.
+# A user (name) must be defined in this file in order for
+# the `ssh` command to work within the created container.
+
+if [[ -z $USER ]];
+then
+    USER=default
+fi
+
+# patch /etc/passwd with a username when running under a non-root user
+# in order for some commands, like `ssh` to work properly.
+if ! whoami &>/dev/null; then
+  echo "$USER:x:$(id -u):$(id -g):Default User:$HOME:/sbin/nologin" >> /etc/passwd
+fi
+
+exec "$@"

images/installer/bin/run

@@ -1,23 +1,14 @@
 #!/bin/bash -e
 #
-# This file serves as the main entrypoint to the openshift-ansible image.
+# This file serves as the init command to the openshift-ansible image.
 # Contains setup logic and runs a user-specified playbook via the
 # $PLAYBOOK_FILE environment variable.
 #
 # For more information see the documentation:
 #	https://github.com/openshift/source-to-image/blob/master/docs/builder_image.md
-#
 
 # SOURCE and HOME DIRECTORY: /opt/app-root/src
 
-USER_ID=$(id -u)
-GROUP_ID=$(id -g)
-
-# Patch /etc/passwd file with the local user info. 
-# A user (name) must be defined in this file in order for
-# the `ssh` command to work within the created container.
-sed "s@${USER_NAME}:x:\${USER_ID}:\${GROUP_ID}@${USER_NAME}:x:${USER_ID}:${GROUP_ID}@g" ${APP_ROOT}/etc/passwd.template > /etc/passwd
-
 INVENTORY="$(mktemp)"
 if [[ -v INVENTORY_FILE ]]; then
   # If the pointed inventory has execute/search perms we can assume it
@@ -36,6 +27,7 @@ elif [[ -v DYNAMIC_SCRIPT_URL ]]; then
   chmod 755 ${INVENTORY}
 else
   echo "One of INVENTORY_FILE, INVENTORY_URL or DYNAMIC_SCRIPT_URL must be provided"
+  exec /usr/bin/usage
   exit 1
 fi
 INVENTORY_ARG="-i ${INVENTORY}"
@@ -54,9 +46,4 @@ WORK_DIR=${WORK_DIR:-${APP_HOME}}
 
 cd ${WORK_DIR}
 
-if [[ -z PLAYBOOK_FILE ]]; then
-    exec /usr/bin/usage
-    exit 0
-fi
-
 ansible-playbook ${INVENTORY_ARG} ${VAULT_PASS_ARG} ${OPTS} ${PLAYBOOK_FILE}