Frequently asked questions

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• What ports are exposed?
• What volumes can be be used?
• What Ubuntu version is installed?
• What Firefox version is installed?

Exposed ports

Containers created from the images expose the following TCP ports:

• port 5901 is used for access via a VNC viewer (e.g. TigerVNC or TightVNC)
• port 6901 is used for access via a web browser with HTML5 support (noVNC)

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Volumes

The images do not create or use any external volumes by default. However, the following folders make good mounting points:

• /home/headless/Documents/
• /home/headless/Downloads/
• /home/headless/Music/
• /home/headless/Pictures/
• /home/headless/Public/
• /home/headless/Templates/
• /home/headless/Videos/

The following mounting point is specific to Firefox:

• /home/headless/.mozilla

Both named volumes and bind mounts can be used. More about volumes can be found in Docker documentation.

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Checking Ubuntu version

You can check the actual Ubuntu version installed in the container by typing the following command into the terminal window:

lsb_release -a

The output will look similar to this:

No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04 LTS
Release: 18.04
Codename: bionic

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Checking Firefox version

You can check the Firefox version installed in the container by typing the following command into the terminal window:

firefox -v

The output will look similar to this:

Mozilla Firefox 60.0.1

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