Update Dockerfile to allow override of FROM variable

l is to let user customize the base image of the component
by passing FROM=myimage during the build process. This would let any
project leveraging Airship ensure that the base image is matching the
security requirements for that project and still use the same Dockerfile.
This will also ease the control of the /etc/apt/source.list
and thereby the result of apt-get update/upgrade procedure.
2. The above goal is achievable by using docker-ce feature such as:
ARG FROM="defaultbaseimage:xx"
FROM ${FROM}
For this reason, the installation of docker.io in the Zuul gating is beeing
replaced by docker-ce.
3. Third Goal is to bring consistency with the other compoenents leveraging
Helm such as the openstack-helm and potentially use bindep the same way
the LOCI images are to ensure
4. The new syntax in the Dockerfile is still commented out until the associated
image builder have been updated to use docker-ce as they have been for the LOCI
images.

Change-Id: I9a9d63329bea2b562f297705dc51661896a592f2

Makefile

@@ -12,25 +12,26 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-DOCKER_REGISTRY ?= quay.io
+DOCKER_REGISTRY   ?= quay.io
-REGION_SUFFIX   ?= maas-region
+REGION_SUFFIX     ?= maas-region
-IMG_COMMON_DIR  ?= images
+IMG_COMMON_DIR    ?= images
-REGION_IMG_DIR  ?= images/maas-region-controller
+REGION_IMG_DIR    ?= images/maas-region-controller
-RACK_SUFFIX     ?= maas-rack
+RACK_SUFFIX       ?= maas-rack
-RACK_IMG_DIR    ?= images/maas-rack-controller
+RACK_IMG_DIR      ?= images/maas-rack-controller
-CACHE_SUFFIX    ?= maas-cache
+CACHE_SUFFIX      ?= maas-cache
-CACHE_IMG_DIR   ?= images/sstream-cache
+CACHE_IMG_DIR     ?= images/sstream-cache
-IMAGE_PREFIX    ?= airshipit
+IMAGE_PREFIX      ?= airshipit
-IMAGE_TAG       ?= untagged
+IMAGE_TAG         ?= untagged
-PROXY           ?= http://proxy.foo.com:8000
+PROXY             ?= http://proxy.foo.com:8000
-NO_PROXY        ?= localhost,127.0.0.1,.svc.cluster.local
+NO_PROXY          ?= localhost,127.0.0.1,.svc.cluster.local
-USE_PROXY       ?= false
+USE_PROXY         ?= false
-PUSH_IMAGE      ?= false
+PUSH_IMAGE        ?= false
-LABEL           ?= commit-id
+LABEL             ?= commit-id
-IMAGE_NAME      := maas-rack-controller maas-region-controller sstream-cache
+IMAGE_NAME        := maas-rack-controller maas-region-controller sstream-cache
-BUILD_DIR       := $(shell mktemp -d)
+BUILD_DIR         := $(shell mktemp -d)
-HELM            := $(BUILD_DIR)/helm
+HELM              := $(BUILD_DIR)/helm
-SSTREAM_IMAGE   := "https://images.maas.io/ephemeral-v3/daily/"
+SSTREAM_IMAGE     := "https://images.maas.io/ephemeral-v3/daily/"
+UBUNTU_BASE_IMAGE ?= ubuntu:16.04
 
 .PHONY: images
 #Build all images in the list
@@ -66,16 +67,21 @@ helm-install:
 .PHONY: build
 build:
 ifeq ($(USE_PROXY), true)
-	docker build -t $(IMAGE) --network=host --label $(LABEL) -f $(IMAGE_DIR)/Dockerfile --build-arg SSTREAM_IMAGE=$(SSTREAM_IMAGE) \
+	docker build -t $(IMAGE) --network=host --label $(LABEL) -f $(IMAGE_DIR)/Dockerfile \
+		--build-arg FROM=$(UBUNTU_BASE_IMAGE) \
 		--build-arg http_proxy=$(PROXY) \
 		--build-arg https_proxy=$(PROXY) \
 		--build-arg HTTP_PROXY=$(PROXY) \
 		--build-arg HTTPS_PROXY=$(PROXY) \
 		--build-arg no_proxy=$(NO_PROXY) \
 		--build-arg NO_PROXY=$(NO_PROXY) \
+                --build-arg SSTREAM_IMAGE=$(SSTREAM_IMAGE) \
 		$(IMAGE_DIR)
 else
-	docker build -t $(IMAGE) --network=host --label $(LABEL) --build-arg SSTREAM_IMAGE=$(SSTREAM_IMAGE) -f $(IMAGE_DIR)/Dockerfile $(IMAGE_DIR)
+	docker build -t $(IMAGE) --network=host --label $(LABEL) -f $(IMAGE_DIR)/Dockerfile \
+		--build-arg FROM=$(UBUNTU_BASE_IMAGE) \
+		--build-arg SSTREAM_IMAGE=$(SSTREAM_IMAGE) \
+		$(IMAGE_DIR)
 endif
 ifeq ($(PUSH_IMAGE), true)
 	docker push $(IMAGE)

images/maas-rack-controller/Dockerfile

@@ -1,4 +1,5 @@
-FROM ubuntu:16.04
+ARG FROM=ubuntu:16.04
+FROM ${FROM}
 
 ENV DEBIAN_FRONTEND noninteractive
 ENV container docker

images/maas-region-controller/Dockerfile

@@ -1,4 +1,5 @@
-FROM ubuntu:16.04
+ARG FROM=ubuntu:16.04
+FROM ${FROM}
 
 ENV DEBIAN_FRONTEND noninteractive
 ENV container docker

images/sstream-cache/Dockerfile

@@ -1,4 +1,5 @@
-FROM ubuntu:16.04
+ARG FROM=ubuntu:16.04
+FROM ${FROM}
 
 ARG SSTREAM_IMAGE=https://images.maas.io/ephemeral-v3/daily/
 ENV IMAGE_SRC ${SSTREAM_IMAGE}

tools/gate/playbooks/docker-image-build.yaml

@@ -14,6 +14,8 @@
 
 - hosts: primary
   tasks:
+    - include_vars: vars.yaml
+
     - name: Debug tag generation inputs
       block:
         - debug:
@@ -39,16 +41,47 @@
         var: image_tags
 
     - name: Install Docker (Debian)
+      when: ansible_os_family == 'Debian'
       block:
+        - file:
+            path: "{{ item }}"
+            state: directory
+          with_items:
+            - /etc/docker/
+            - /etc/systemd/system/docker.service.d/
+            - /var/lib/docker/
+        - mount:
+            path: /var/lib/docker/
+            src: tmpfs
+            fstype: tmpfs
+            opts: size=25g
+            state: mounted
+        - copy: "{{ item }}"
+          with_items:
+            - content: "{{ docker_daemon | to_json }}"
+              dest: /etc/docker/daemon.json
+            - src: files/docker-systemd.conf
+              dest: /etc/systemd/system/docker.service.d/
+        - apt_key:
+            url: https://download.docker.com/linux/ubuntu/gpg
+        - apt_repository:
+            repo: deb http://{{ zuul_site_mirror_fqdn }}/deb-docker xenial stable
         - apt:
             name: "{{ item }}"
+            allow_unauthenticated: True
           with_items:
-            - docker.io
+            - docker-ce
             - python-pip
-          when: ansible_os_family == 'Debian'
         - pip:
             name: docker
             version: 2.7.0
+        # NOTE(SamYaple): Allow all connections from containers to host so the
+        # containers can access the http server for git and wheels
+        - iptables:
+            action: insert
+            chain: INPUT
+            in_interface: docker0
+            jump: ACCEPT
       become: True
 
     - name: Make images

tools/gate/playbooks/files/docker-systemd.conf

@@ -0,0 +1,8 @@
+# NOTE(SamYaple): CentOS cannot be build with userns-remap enabled. httpd uses
+# cap_set_file capability and there is no way to pass that in at build as of
+# docker 17.06.
+# TODO(SamYaple): Periodically check to see if this is possible in newer
+# versions of Docker
+[Service]
+ExecStart=
+ExecStart=/usr/bin/dockerd

tools/gate/playbooks/vars.yaml

@@ -0,0 +1,20 @@
+# Copyright 2017 The Openstack-Helm Authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+docker_daemon:
+  group: zuul
+  registry-mirrors:
+    - "http://{{ zuul_site_mirror_fqdn }}:8082/"
+  storage-driver: overlay2
+  debug: True