Travis Build failing due to missing packages - linux image extra

[RobertNorthard]

Error:
3.01s$ sudo systemctl start docker git.checkout 0.59s$ git clone --depth=50 --branch=master https://github.com/Accenture/adop-docker-compose.git Accenture/adop-docker-compose 0.01s Setting environment variables from .travis.yml $ export DOCKER_ENGINE_VERSION=1.10.3 $ export DOCKER_COMPOSE_VERSION=1.9.0 $ export INITIAL_ADMIN_USER=admin.user $ export INITIAL_ADMIN_PASSWORD_PLAIN=admin123 $ export COMPOSE_FILES="-f site/docker-compose.yml" $ export JEKYLL_SOURCE="/site" $ bash -c 'echo $BASH_VERSION' 4.3.48(1)-release before_install.1 0.01s$ sudo sh -c 'echo "deb https://apt.dockerproject.org/repo ubuntu-trusty main" > /etc/apt/sources.list.d/docker.list' before_install.2 0.55s$ sudo apt-key adv --keyserver hkp://p80.pool.sks-keyservers.net:80 --recv-keys 58118E89F3A912897C070ADBF76221572C52609D before_install.3 1.99s$ sudo apt-get update before_install.4 0.12s$ sudo apt-key update 0.36s$ sudo apt-get install -qqy --force-yes linux-image-extra-$(uname -r) apparmor E: Unable to locate package linux-image-extra-4.15.0-1028-gcp E: Couldn't find any package by glob 'linux-image-extra-4.15.0-1028-gcp' E: Couldn't find any package by regex 'linux-image-extra-4.15.0-1028-gcp' The command "sudo apt-get install -qqy --force-yes linux-image-extra-$(uname -r) apparmor" failed and exited with 100 during .