Add docker GUI instructions

[ssheorey]

Docker — Open3D master (d781144d5) documentation.pdf

This change is 

[update-docs]

Thanks for submitting this pull request! The maintainers of this repository would appreciate if you could update the CHANGELOG.md based on your changes.

[yxlao]

Reviewed all commit messages.
Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @errissa and @ssheorey)

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docs/getting_started.rst.in, line 147 at r1 (raw file):

2. X server:
    :bash:`-v /tmp/.X11-unix:/tmp/.X11-unix -e DISPLAY`

It would be more intuitive if we provide an end-to-end example with all commands to run, showcasing how to draw a basic geometry inside docker.

[errissa]

Reviewed 1 of 1 files at r1, all commit messages.
Reviewable status: all files reviewed, 1 unresolved discussion (waiting on @yxlao)

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docs/getting_started.rst.in, line 147 at r1 (raw file):

Previously, yxlao (Yixing Lao) wrote…

It would be more intuitive if we provide an end-to-end example with all commands to run, showcasing how to draw a basic geometry inside docker.

I concur. If I didn't already know how to run Open3D from Docker I'm no sure these instructions are enough to get it correct. Also, is it not necessary to run xhost + on the host in order for apps within docker to be able to access host X server?

[ssheorey]

Reviewable status: 0 of 1 files reviewed, 1 unresolved discussion (waiting on @errissa and @yxlao)

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docs/getting_started.rst.in, line 147 at r1 (raw file):

Previously, errissa (Rene) wrote…

I concur. If I didn't already know how to run Open3D from Docker I'm no sure these instructions are enough to get it correct. Also, is it not necessary to run xhost + on the host in order for apps within docker to be able to access host X server?

Done.

Added complete example that containerizes the Open3D viewer. Drawing geometry is covered in other places.

[yxlao]

Reviewed 1 of 1 files at r2, all commit messages.
Reviewable status: all files reviewed, 3 unresolved discussions (waiting on @errissa, @ssheorey, and @yxlao)

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docs/getting_started.rst.in, line 174 at r2 (raw file):

    # Copy and install Open3D viewer from docker context
    COPY open3d-app-*.deb /root/

Could we mention how to get the .deb file.

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docs/getting_started.rst.in, line 201 at r2 (raw file):

.. code-block:: bash

Could we include how to create the Dockerfile here?

wget https://xxx/xxx/open3d-xxxx.deb
echo -e "FROM ubuntu:latest \nCOPY xxx ....\n" >> Dockerfile

That is, it would be ideal if copy-and-paste all commands can successfully launch the visualizer in Docker.

[ssheorey]

Reviewable status: 0 of 1 files reviewed, 3 unresolved discussions (waiting on @errissa and @yxlao)

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docs/getting_started.rst.in, line 174 at r2 (raw file):

Previously, yxlao (Yixing Lao) wrote…

Could we mention how to get the .deb file.

Done.

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docs/getting_started.rst.in, line 201 at r2 (raw file):

Previously, yxlao (Yixing Lao) wrote…

Could we include how to create the Dockerfile here?

wget https://xxx/xxx/open3d-xxxx.deb
echo -e "FROM ubuntu:latest \nCOPY xxx ....\n" >> Dockerfile

That is, it would be ideal if copy-and-paste all commands can successfully launch the visualizer in Docker.

Done.

[errissa]

LGTM