Docker 1.5.0 released, install on Ubuntu 14.04, 13.04, 12.04 and Linux Mint 17.1 rebecca

Docker 1.5.0 released, install on Ubuntu 14.04, 14.10, 15.04 and Linux Mint 17.1 rebecca

Docker is an open source, revolutionary software project that allows application developers and system administrators to easily and quickly package, distribute and run applications as a lightweight container, anywhere.

It’s a command-line application comprised of two components, the Docker Hub that has been designed from the ground up to act as a cloud service for sharing apps and automate workflows, and the Docker Engine, which is the actual server process designed to manage all the containers.

What's new in Docker 1.5.0:
Builder:

• Dockerfile to use for a given docker build can be specified with the -f flag
• Dockerfile and .dockerignore files can be themselves excluded as part of the .dockerignore file, thus preventing modifications to these files invalidating ADD or COPY instructions cache
• ADD and COPY instructions accept relative paths
• Dockerfile FROM scratch instruction is now interpreted as a no-base specifier
• Improve performance when exposing a large number of ports

Hack:

• Allow client-side only integration tests for Windows
• Include docker-py integration tests against Docker daemon as part of our test suites

Packaging:

• Support for the new version of the registry HTTP API
• Speed up docker push for images with a majority of already existing layers
• Fixed contacting a private registry through a proxy

Remote API:

• A new endpoint will stream live container resource metrics and can be accessed with the docker stats command
• Containers can be renamed using the new rename endpoint and the associated docker rename command
• Container inspect endpoint show the ID of exec commands running in this container
• Container inspect endpoint show the number of times Docker auto-restarted the container
• New types of event can be streamed by the events endpoint: ‘OOM’ (container died with out of memory), ‘exec_create’, and ‘exec_start'
• Fixed returned string fields which hold numeric characters incorrectly omitting surrounding double quotes

Runtime:

• Docker daemon has full IPv6 support
• The docker run command can take the --pid=host flag to use the host PID namespace, which makes it possible for example to debug host processes using containerized debugging tools
• The docker run command can take the --read-only flag to make the container’s root filesystem mounted as readonly, which can be used in combination with volumes to force a container’s processes to only write to locations that will be persisted
• Container total memory usage can be limited for docker run using the —memory-swap flag
• Major stability improvements for devicemapper storage driver
• Better integration with host system: containers will reflect changes to the host's /etc/resolv.conf file when restarted
• Better integration with host system: per-container iptable rules are moved to the DOCKER chain
• Fixed container exiting on out of memory to return an invalid exit code

Other:

• The HTTP_PROXY, HTTPS_PROXY, and NO_PROXY environment variables are properly taken into account by the client when connecting to the Docker daemon

The Linux container engine

Dubbed by its developers “the Linux container engine,” Docker can be used by sysadmins and developers as an open platform for distributed applications, allowing them to build, ship and run any distributed apps.

Supported operating systems

At the moment, Docker runs only on GNU/Linux operating systems. It has been successfully tested with numerous distributions of Linux, including Debian, Ubuntu, Arch Linux, Fedora, openSUSE, as well as CentOS and Red Hat Enterprise Linux.

Under the hood and availability

The software is written entirely in the Go programming language developed at Google. It is distributed as a single, universal sources archive that can be optimized and deployed on virtually any Linux kernel-based operating system, supporting both 32-bit and 64-bit hardware platforms.

How to install Docker 1.5.0on Ubuntu 14.04, 13.04, 12.04 and Linux Mint 17.1 rebecca :

to install docker 1.5.0 on ubuntu and linux mint you can follow this page : https://docs.docker.com/installation/ubuntulinux/