And this is the command I used on Bionic:
schroot -u root -c bionic-amd64 -- bash -c "apt-get update; apt-get install -y tzdata; echo 'zdump test'; echo '----------'; zdump -v Asia/Gaza | grep 'Mar 26.*2022'; echo 'SystemV tz test'; echo '---------------'; diff <(zdump -v America/Phoenix | cut -d' ' -f2-) <(zdump -v SystemV/MST7 | cut -d' ' -f2-)"
And this is the command I used on Bionic:
schroot -u root -c bionic-amd64 -- bash -c "apt-get update; apt-get install -y tzdata; echo 'zdump test'; echo '----------'; zdump -v Asia/Gaza | grep 'Mar 26.*2022'; echo 'SystemV tz test'; echo '---------------'; diff <(zdump -v America/Phoenix | cut -d' ' -f2-) <(zdump -v
SystemV/MST7 | cut -d' ' -f2-)"