CPUs and memory limitation for Docker containers

[grossmj]

Starting with GNS3 2.3, users can limit the amount of memory and CPU resources a Docker container can use.

The two new properties are:

• memory: maximum amount of memory the container can use in MB (integer), for instance 1024MB will limit the container to use a maximum 1GB of RAM.
• cpus: maximum amount of CPU resources the container can use (float), for instance 0.5 will limit the container to 50% of a CPU core.

[piotrpekala7]

added in 8d795eb in node configurator, branch master-2.3

[piotrpekala7]

when I try to test it and drag docker node on topology I receive following error: Cannot connect to compute 'GNS3 VM with request POST', server branch 2.3, similar issue in GUI repo GNS3/gns3-gui#2969

[piotrpekala7]

by the way, I don't know why, but the configurator for this type of nodes in the web UI does not cover all the functions from the old interface

[grossmj]

We shouldn't allow negative values and default value for CPUs should be 0.0 to show that float value is allowed. Also, MB should be added as a suffix for the memory field.

[grossmj]

by the way, I don't know why, but the configurator for this type of nodes in the web UI does not cover all the functions from the old interface

I will open an new issue for this.

[piotrpekala7]

ok added in 169a06f