These commands are executed without `shell=True`, so the subprocess
module treats e.g. "docker exec my_pg_container psql" as a single command
(resulting in Errno 2 "No such file or directory") instead of a command
with arguments.
Some settings in user's .psqlrc, e.g. "linestyle unicode", may break the
CSV output. "--no-psqlrc" tells psql to not read startup file.
This is not necessary for the analyze_command and restore_command (with
all_databases), but it's generally recommended when running psql from a
script.
Jakub Jirutka