Missing docker images from custom AMI

Elastic CI Stack for AWS
10

Thanks @paula, I got it working in the end, I had to combine both solutions.

I enabled the Buildkite-agent namespace during the AMI build, and increased theDOCKER_PRUNE_UNTIL to prevent the images from being deleted on startup.

This is how my shell provisioning script looks like now:

#!/usr/bin/env bash
set -o errexit
set -o nounset

sudo sh -c "echo 'export DOCKER_PRUNE_UNTIL=26280h' > /etc/profile.d/script.sh"
sudo chmod +x /etc/profile.d/script.sh

sudo cp /etc/docker/daemon.json /etc/docker/daemon.json.bak

sudo systemctl stop docker
DOCKER_CONFIG_TMP=$(mktemp)
sudo cp /etc/docker/daemon.json /etc/docker/daemon.json.bak
jq '. += {"userns-remap": "buildkite-agent"}' < /etc/docker/daemon.json > "${DOCKER_CONFIG_TMP}"
sudo mv "${DOCKER_CONFIG_TMP}" /etc/docker/daemon.json

cat <<EOF > /tmp/subuid
buildkite-agent:$(id -u buildkite-agent):1
buildkite-agent:100000:65536
EOF
sudo mv /tmp/subuid /etc/subuid

cat <<EOF > /tmp/subgid
buildkite-agent:$(getent group docker | awk -F: '{print $3}'):1
buildkite-agent:100000:65536
EOF
sudo mv /tmp/subgid /etc/subgid

sudo systemctl start docker

(
    sudo su - buildkite-agent
    docker pull softartdev/android-fastlane:30
)

sudo mv /etc/docker/daemon.json.bak /etc/docker/daemon.json

Thanks for all the help!