Docker is een opensource tool voor ontwikkelaars, waarmee installatiepakketten kunnen worden gemaakt. Het stopt de applicatie inclusief alle onderdelen waar het afhankelijk van is in een virtuele container die op nagenoeg elk willekeurige Linux-machine kan draaien. Dit moet het ontwikkelen en installeren voor de verschillende Linux-distributies vereenvoudigen. Deze week is versie 1.3 van Docker beschikbaar gekomen en de release notes daarvan kunnen hieronder worden gevonden.
Version 1.3.0
This version fixes a number of bugs and issues and adds new functions and other improvements. These include:
New command:
docker execThe new
docker execcommand lets you run a process in an existing, active container. The command has APIs for both the daemon and the client. Withdocker exec, you'll be able to do things like add or remove devices from running containers, debug running containers, and run commands that are not part of the container's static specification.New command:
docker createTraditionally, the
docker runcommand has been used to both create a container and spawn a process to run it. The newdocker createcommand breaks this apart, letting you set up a container without actually starting it. This provides more control over management of the container lifecycle, giving you the ability to configure things like volumes or port mappings before the container is started. For example, in a rapid-response scaling situation, you could usecreateto prepare and stage ten containers in anticipation of heavy loads.New provenance features
Official images are now signed by Docker, Inc. to improve your confidence and security. Look for the blue ribbons on the Docker Hub. The Docker Engine has been updated to automatically verify that a given Official Repo has a current, valid signature. If no valid signature is detected, Docker Engine will use a prior image.
Other improvements & changes
We've added a new security options flag that lets you set SELinux and AppArmor labels and profiles. This means you'll longer have to use `docker run --privileged on kernels that support SE Linux or AppArmor.
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