14 DAY TRIAL // The development cycle of the Docker 1.12.2 maintenance update to the widely-used open-source and cross-platform application container engine continues with a second Release Candidate, as announced on October 3, 2016, by Docker engineer Victor Vieux.
Docker 1.12.2 Release Candidate 2 (RC2) comes one week after the unveiling of the first RC milestone, mainly to address more of the bugs and annoyances discovered lately or reported by users since the first point release of the major Docker 1.12 release. Again, the entire changelog is attached below if you like to read the technical details.
As you might know, Docker 1.12 introduced a lot of exciting new features, such as the built-in orchestration and routing mesh, the brand new Swarm Mode, as well as a bunch of networking improvements for better security. And it looks like Docker 1.12.2 will attempt to further improve the Swarm Mode and networking functionalities.
Docker 1.12.2 coming this fall for all supported operating systems
Docker 1.12.2 should be out any moment now, if there aren't any blockers to make the developers push a third Release Candidate snapshot out the door with extra bugfixes. Until then, your help is needed to thoroughly test this second RC build and report any issues you might encounter.
Source and binary packages of Docker 1.12.2 Release Candidate 2 are available for download for GNU/Linux operating systems right now via our website, and you can visit the release notes to grab the binaries for macOS Sierra 10.12 and Windows OSes as well. Linux users using RPM-based distros should be aware of the important note about Docker 1.12 shipping with an updated systemd unit file.