AWS - Elastic Beanstalk Sidekiq Not Starting Automatically - ruby-on-rails

Question

Hey I'm running a rails application on an AWS Elastic Beanstalk instance and have run into a couple issues using Sidekiq for background jobs. I'm using Sidekiq to send welcome and password reset emails.
The application is running Rails 4.2.3. The Elastic Beanstalk instance is running 64bit Amazon Linux 2015.03 v2.0.1 running Ruby 2.2 (Puma). I used the following tutorial to set up a Redis node and Sidekiq on Elastic Beanstalk, and used the sidekiq.config from the following GIST to place inside my .ebextentions folder. I did not use any of the other recommended config files from the GIST.
Everything seemed to go off without a hitch. The application deployed correctly and there were no errors in any of the logs. However, when I created a new user, triggering a welcome email, the email failed to send. I checked the Sidekiq web application and it appeared that my jobs were scheduled but never executed. On further inspection I determined that Sidekiq wasn't actually running. I connected to the EC2 instance via SSH and manually ran bundle exec sidekiq and the email sent.
For some reason Sidekiq isn't getting run when the application is being deployed.
Here are the contents of my sidekiq.config:
# Sidekiq interaction and startup script
files:
"/opt/elasticbeanstalk/hooks/appdeploy/post/50_restart_sidekiq":
mode: "000755"
content: |
#!/bin/bash
. /opt/elasticbeanstalk/containerfiles/envvars
PIDFILE=$EB_CONFIG_APP_PIDS/sidekiq.pid
cd $EB_CONFIG_APP_CURRENT
if [ -f $PIDFILE ]
then
SIDEKIQ_LIVES=$(/bin/ps -o pid= -p `cat $PIDFILE`)
if [ -z $SIDEKIQ_LIVES ]
then
rm -rf $PIDFILE
else
kill -TERM `cat $PIDFILE`
sleep 10
rm -rf $PIDFILE
fi
fi
BUNDLE=/usr/local/bin/bundle
SIDEKIQ=/usr/local/bin/sidekiq
$BUNDLE exec $SIDEKIQ \
-e production \
-P /var/app/containerfiles/pids/sidekiq.pid \
-C /var/app/current/config/sidekiq.yml \
-L /var/app/containerfiles/logs/sidekiq.log \
-d
"/opt/elasticbeanstalk/hooks/appdeploy/pre/03_mute_sidekiq":
mode: "000755"
content: |
#!/bin/bash
. /opt/elasticbeanstalk/containerfiles/envvars
PIDFILE=$EB_CONFIG_APP_PIDS/sidekiq.pid
if [ -f $PIDFILE ]
then
SIDEKIQ_LIVES=$(/bin/ps -o pid= -p `cat $PIDFILE`)
if [ -z $SIDEKIQ_LIVES ]
then
rm -rf $PIDFILE
else
kill -USR1 `cat $PIDFILE`
sleep 10
fi
fi
What am I missing? Are there other files I need to add to my .ebextentions folder? Why isn't Sidekiq being initiated?