We are at the point that all distributions we are building have Python 3, so any tools running in the chroot can assume Python 3 exists. This makes dib-python redundant; mark it as deprecated and start to remove it from elements where it is no longer required. Change-Id: I5d852843ec65d3b04444b77c54c5b82424455cd8
ubuntu-systemd-container
The ubuntu-systemd-container element uses debootstrap
for generating a minimal image for use by machine containers. In
contrast the ubuntu element uses the cloud-image as the
initial base and the ubuntu-minimal builds an image to be
used for hosts.
By default this element creates the latest LTS release. The exact
setting can be found in the ubuntu-common element's
environment.d directory in the variable
DIB_RELEASE. If a different release of Ubuntu should be
created, the variable DIB_RELEASE can be set
appropriately.
Note that this element installs systemd-sysv as the init
system for 18.04+.