Add tox job for building Docker image

Add new job 'buildimage-docker' which produces a compressed
image from which a Docker container can be started. This
container is designed to run Samba.

Change-Id: I499fa1850d3ad197cab5f742bfca1a9f074e9a8b

data/docker/Dockerfile

@@ -0,0 +1,20 @@
+FROM phusion/baseimage:0.9.18
+
+EXPOSE 445
+EXPOSE 139
+EXPOSE 135
+
+CMD ["/sbin/my_init"]
+
+RUN apt-get update && apt-get install -y samba smbclient
+
+RUN mkdir /shares
+RUN chmod 0777 /shares
+
+RUN adduser --disabled-password --gecos '' master
+RUN (echo pwd; echo pwd) | smbpasswd -a -s master
+RUN sed -i "/\[global\]/a\ \ \ include = registry" /etc/samba/smb.conf
+RUN apt-get clean
+
+entrypoint ["/usr/sbin/smbd"]
+cmd ["-F", "-S"]

tools/docker_builder.sh

@@ -0,0 +1,71 @@
+#!/bin/bash
+
+MANILA_DOCKER_CONTAINER_NAME=${MANILA_DOCKER_CONTAINER_NAME:-"manila-docker-container"}
+MANILA_DOCKER_CONTAINER_IMAGE_NAME=${MANILA_DOCKER_CONTAINER_IMAGE_NAME:-"$MANILA_DOCKER_CONTAINER_NAME.tar"}
+
+if [ -e /etc/os-release ]; then
+    platform=$(cat /etc/os-release | awk -F= '/^ID=/ {print tolower($2);}')
+    # remove eventual quotes around ID=...
+    platform=$(echo $platform | sed -e 's,^",,;s,"$,,')
+elif [ -e /etc/system-release ]; then
+    case "$(head -1 /etc/system-release)" in
+        "Red Hat Enterprise Linux Server"*)
+            platform=rhel
+            ;;
+        "CentOS"*)
+            platform=centos
+            ;;
+        *)
+            echo -e "Unknown value in /etc/system-release. Impossible to build images.\nAborting"
+            exit 2
+            ;;
+    esac
+else
+    echo -e "Unknown host OS. Impossible to build images.\nAborting"
+    exit 2
+fi
+
+is_docker_installed() {
+    package_name="docker"
+    if [ "$platform" = 'ubuntu' ]; then
+        dpkg -s "docker.io" &> /dev/null
+    else
+        # centos, fedora, opensuse, or rhel
+        if ! rpm -q "$package_name" &> /dev/null; then
+            rpm -q "$(rpm -q --whatprovides "$package_name")"
+        fi
+    fi
+}
+
+if ! is_docker_installed; then
+    echo "Docker is not found. Installing it."
+    case "$platform" in
+        "ubuntu")
+            sudo apt-get update
+            sudo apt-get install -y apparmor lxc cgroup-lite
+            sudo apt-get install -y docker.io
+            ;;
+        "opensuse")
+            sudo zypper --non-interactive --gpg-auto-import-keys in docker
+            ;;
+        "fedora" | "rhel" | "centos")
+            if [ ${platform} = "centos" ]; then
+                # install EPEL repo, in order to install argparse
+                sudo rpm -Uvh --force http://dl.fedoraproject.org/pub/epel/6/x86_64/epel-release-6-8.noarch.rpm
+            fi
+            sudo yum install docker -y
+            ;;
+        *)
+            echo -e "Unknown platform '$platform' for installing packages.\nAborting"
+            exit 2
+            ;;
+    esac
+else
+    echo "Docker is found."
+fi
+
+echo "Starting building a container."
+
+sudo docker build -t $MANILA_DOCKER_CONTAINER_NAME data/docker
+sudo docker save -o $MANILA_DOCKER_CONTAINER_IMAGE_NAME $MANILA_DOCKER_CONTAINER_NAME
+sudo gzip -v --force $MANILA_DOCKER_CONTAINER_IMAGE_NAME

tools/gate/build-images

@@ -6,4 +6,6 @@ if [ "$IMAGE" = "generic" ]; then
     tox -v -e buildimage
 elif [ "$IMAGE" = "lxd" ]; then
     tox -v -e buildimage-lxd
+elif [ "$IMAGE" = "docker" ]; then
+    tox -v -e buildimage-docker
 fi

tox.ini

@@ -32,6 +32,9 @@ commands = manila-image-create
 deps =
     -r{toxinidir}/requirements.txt
 
+[testenv:buildimage-docker]
+commands = {toxinidir}/tools/docker_builder.sh
+
 [testenv:buildimage-lxd]
 commands = manila-image-create lxd