Loop over apps instances script moves recursively through all given applications (guids) instances (containers) and executes specified commands against them (via SSH without switching any ORGs and SPACEs). Each started app instance returns parsable json with the app's guid, it's instance index and your command output. Feed 'guids' and 'container_command' variables to run the script.
$ guids=$(cf curl /v3/apps | jq -r .resources[].guid) \
$ container_command="env | grep CF_INSTANCE_INTERNAL_IP | cut -d "=" -f 2" \
$ ./loop_over_apps_instances.sh
##########################################################################
## SSH access is limited by your current CF user (admin) role
##########################################################################
{"guid":"0b1638f7-a566-4317-b3e7-2592a12790f2","i":"0","output":"11.248.84.62"}
{"guid":"6064c81b-a841-4850-b55a-d98f8dad0c0d","i":"0","output":"11.255.154.14"}
{"guid":"6064c81b-a841-4850-b55a-d98f8dad0c0d","i":"1","output":"11.255.150.28"}
{"guid":"6064c81b-a841-4850-b55a-d98f8dad0c0d","i":"2","output":"11.255.76.6"}
{"guid":"6f79bc16-e707-40e1-996f-c190c529b877","i":"0","output":"11.250.127.8"}
{"guid":"91480187-8fc8-4824-a397-853e48f9300a","i":"0","output":"11.251.23.7"}
{"guid":"91480187-8fc8-4824-a397-853e48f9300a","i":"1","output":"11.255.151.32"}
{"guid":"91480187-8fc8-4824-a397-853e48f9300a","i":"2","output":"11.249.220.21"}
9f22ec91-6118-434a-9ff2-2c7c98608f98: stopped - can't ssh into app containers
{"guid":"30d28463-10de-40df-8a0c-d90ea2bc8d6f","i":"0","output":"11.251.215.13"}
{"guid":"203a970c-418f-4f9c-8e61-45df1ac9ee1c","i":"0","output":"11.249.119.22"}*it's not perfect and free of bugs - might require some adaptation
**tested on Ubuntu 18.04.5 LTS (Bionic Beaver), GNU bash, version 4.4.20, jq-1.5-1-a5b5cbe, cf version 6.51.0+2acd15650.2020-04-07