README.md: add more docs

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Johannes Schauer Marin Rodrigues 2021-08-17 11:07:48 +02:00
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@ -75,11 +75,11 @@ reproducible** if the `$SOURCE_DATE_EPOCH` environment variable is set.
The author believes, that it should not be necessary to have superuser
privileges to create a file (the chroot tarball) in one's home directory.
Thus, mmdebstrap provides multiple options to create a chroot tarball with the
right permissions **without superuser privileges**. Depending on what is
available, it uses either Linux user namespaces, fakechroot or proot.
Debootstrap supports fakechroot but will not create a tarball with the right
permissions by itself. Support for Linux user namespaces and proot is missing
(see bugs #829134 and #698347, respectively).
right permissions **without superuser privileges**. This avoids a whole class
of bugs like #921815. Depending on what is available, it uses either Linux user
namespaces, fakechroot or proot. Debootstrap supports fakechroot but will not
create a tarball with the right permissions by itself. Support for Linux user
namespaces and proot is missing (see bugs #829134 and #698347, respectively).
When creating a chroot tarball with debootstrap, the temporary chroot directory
cannot be on a filesystem that has been mounted with nodev. In unprivileged
@ -93,7 +93,10 @@ Limitations in comparison to debootstrap
----------------------------------------
Debootstrap supports creating a Debian chroot on non-Debian systems but
mmdebstrap requires apt and is thus limited to Debian and derivatives.
mmdebstrap requires apt and is thus limited to Debian and derivatives. This
means that mmdebstrap can never fully replace debootstrap and debootstrap will
continue to be relevant in situations where you want to create a Debian chroot
from a platform without apt and dpkg.
There is no `SCRIPT` argument.