fedora

Similar to #119

It could be useful to mount the host file system as overlay, so that we are sure that the host file system is not touched outside the container.

This is also useful for #28

Example:

distrobox create --image alpine:latest --name test-alpine --home /tmp/test-home --overlay-host

Specifically the home should then be mounted with the :O flag:

[...]
--volume /:/run/

Adding an non existing project to a "_meta" file leads to 500.

How to reproduce it:

• Open a "meta" file from a page
• Add an non existing project to as path
• Save the file

i.e:

  <repository name="openSUSE_15.2">
    <path project="foo:bar" repository="openSUSE_15.2"/>
    <arch>x86_64</arch>
    <arch>armv7l</arch>
    <arch>aarch64</arch>
    <arch>ppc64le</arch>
  </rep

Describe the bug
When I edit a sketch I can't see any point.

To Reproduce
Steps to reproduce the behavior:

1. Create a sketch
2. Make a rectange

Expected behavior
Show the points as black dots

Screenshots

**Desktop (please complete the following informati