Added travis:

[LanderU]

• Create .ci folder with Dockerfile to compile the repo
• Create .travis.yml file

[LanderU]

Reviewable.

[nzlz]

In .ci/compile.sh I had to change the following:

- cp -r /tmp/MARA/* src/mara
+ mkdir -p /tmp/MARA
+ cp -r /tmp/MARA/ src/mara/*

Update: I see you handle this in the travis.yml script via before_script. Was not working fine for me, seems like it works fine in the travis build though.

[nzlz]

Fixed a issue with robotiq_gripper_gazebo_plugins (AcutronicRobotics/robotiq_modular_gripper@1a0c76d) and ROS2 WS its compiling fine now. (ros1 still not finished)

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Im getting this error frequently before the entrypoint, Im solving it by retrying many times:

E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.0g-2ubuntu4.3_amd64.deb  Connection failed [IP: 91.189.91.23 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

[LanderU]

Update: I see you handle this in the travis.yml script via before_script. Was not working fine for me, seems like it works fine in the travis build though.

These commands are only for travis. In order to compile the current branch instead of compile only master that is set on .repos file.

Im getting this error frequently before the entrypoint, Im solving it by retrying many times:
E: Failed to fetch http://security.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.0g-> 2ubuntu4.3_amd64.deb Connection failed [IP: 91.189.91.23 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing?

This is a known issue, see: http://wiki.ros.org/melodic/Installation/Ubuntu setup you keys. They provide the key in three different server. I'm going to implement a logic, to retry the fetch if one is failling(in a separate PR).

[LanderU]

I'm running again after fetch your latest changes on README.md @nzlz, if I've green light I'll merge it.

[nzlz]

Connection failed issue still pending. As @LanderU said, to be solved in another PR, so the current state of CI LGTM.