Allow MIRRORSITE to pass sudo

[jgoerzen]

cowbuilder always passes a --mirror. When one system is used to build both Debian and Ubuntu packages, it is necessary to specify a MIRRORSITE for at least some of them. This permits it to cross sudo.

[bmiklautz]

@jgoerzen I hit the same problem (building Debian packages on Ubuntu) and bypassed it by using the PBUILDER_CONFIG.

PBUILDER_CONFIG=$(tempfile)
export PBUILDER_CONFIG
echo 'MIRRORSITE="http://ftp.debian.org/debian"' > $PBUILDER_CONFIG
echo 'DEBOOTSTRAPOPTS=("--keyring=/usr/share/keyrings/debian-archive-keyring.gpg")' >> $PBUILDER_CONFIG

Maybe this solution could also work for you.

[mika]

Sorry for the long delay in getting to this, the workaround suggested by @bmiklautz is indeed a solution which saw + use in other setups as well, though the change @jgoerzen proposed should make it easier esp. for new users, so merged! Thanks @jgoerzen + @bmiklautz!