Pseudo-randomize container names to distinguish them from each other

[piraka9011]

Copied from the aws-ros-dev fork:

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The script produces a docker image and starts a container with a fixed name. If the container is not stopped, all subsequent script executions will try to start the old container and produce incorrect results.

This can be mitigated by adding a fixed length random string at the end of the current container name, to distinguish between different invocations of the script.

Resources

Issue #27

[emersonknapp]

Closing as no longer relevant - in the tool as it is right now:

• The majority of functionality happens in a docker build which does not have a name
• The final build is exported via a docker run with no arguments, so the name is chosen by docker e.g. frivolous_einstein