Set up CD pipeline

When commit is pushed to 'dev' branch and after it has gone through the CI pipeline, it should be deployed to Expo to generate a new APK.

The CD pipeline was supposed to be implemented together with the CI pipeline in issue #16 (closed). However, there was an issue with the CD process. The issue is also detailed in an open issue on Expo CLI repo on GitHub.

Basically, there was an error thrown: "Error: ENOSPC: System limit for number of file watchers reached". I tried increasing the amount of watches as suggested by including the following in the before_script section of the pipeline configuration file:
echo fs.inotify.max_user_instances=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
echo fs.inotify.max_queued_events=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p

However, this resulted in the following:
$ echo fs.inotify.max_user_instances=524288 | tee -a /etc/sysctl.conf && sysctl -p
fs.inotify.max_user_instances=524288
sysctl: error setting key 'fs.inotify.max_user_instances': Read-only file system
$ echo fs.inotify.max_user_watches=524288 | sudo tee -a /etc/sysctl.conf && sysctl -p
/bin/sh: eval: line 88: sudo: not found
$ echo fs.inotify.max_queued_events=524288 | sudo tee -a /etc/sysctl.conf && sudo sysctl -p
/bin/sh: eval: line 90: sudo: not found

Thus, the issue remains unsolved for now, preventing the implementation of the CD pipeline.