Can't start container

docker-compose.yml
version: "2"
services:
mysql:
image: sameersbn/mysql:latest
environment:
- DB_USER=gitlab
- DB_PASS=
- DB_NAME=gitlabhq_production
volumes:
- mysql-data:/var/lib/mysql

gitlab: image: sameersbn/gitlab:8.8.1 links:
- redis:redisio
- mysql:mysql
volumes:
- gitlab_data:/home/git/gitlab
ports:
- "10080:80"
- "10022:22"
environment:
- DEBUG=true
- AWS_BACKUP_ACCESS_KEY_ID=
- AWS_BACKUP_SECRET_ACCESS_KEY=
- AWS_BACKUP_BUCKET=
- AWS_BACKUPS=true
- AWS_BACKUP_REGION=eu-west-1
- GITLAB_SECRETS_SECRET_KEY_BASE=
- GITLAB_SECRETS_DB_KEY_BASE=
- GITLAB_SECRETS_OTP_KEY_BASE=
- GITLAB_CI_SECRETS_SESSION_KEY_BASE=
- DB_TYPE=mysql
- DB_HOST=mysql
- DB_USER=gitlab
- DB_PASS=
- REDIS_HOST=redisio
- GITLAB_EMAIL=
- GITLAB_HOST=
- GITLAB_PORT=10080
- GITLAB_SSH_HOST=
- GITLAB_SSH_PORT=10022
- GITLAB_BACKUPS=daily
- SMTP_ENABLED=true
- SMTP_DOMAIN=
- SMTP_HOST=
- SMTP_PORT=
- SMTP_USER=
- SMTP_PASS=
- IMAP_ENABLED=true
- IMAP_HOST=
- IMAP_USER=
- IMAP_PASS=yed6mo5ohJ
- OAUTH_GITHUB_API_KEY=
- OAUTH_GITHUB_APP_SECRET=
redis:
image: sameersbn/redis:latest

volumes:
mysql-data:
external:
name: gitlab_mysql
gitlab_data:
external:
name: gitlab_data

docker logs container

• sed -i '/{{NGINX_HSTS_MAXAGE}}/d' /etc/nginx/sites-enabled/gitlab
• nginx_configure_gitlab_ipv6
• [[ ! -f /proc/net/if_inet6 ]]
• nginx_configure_gitlab_ci
• [[ -n '' ]]
• case ${1} in
• migrate_database
• case ${DB_ADAPTER} in
• QUERY='SELECT count() FROM information_schema.tables WHERE table_schema = '''gitlabhq_production''';'
  ++ mysql -h mysql -P 3306 -u gitlab -psecretpassword -ss -e 'SELECT count() FROM information_schema.tables WHERE table_schema = '''gitlabhq_production''';'
• COUNT=64
• CACHE_VERSION=
• [[ -f /home/git/data/tmp/VERSION ]]
• [[ 8.8.1 != '' ]]
• [[ -n '' ]]
  ++ vercmp 8.8.1 8.0.0
  ++ expr '(' 8.8.1 : '([^.])' ')' - '(' 8.0.0 : '([^.])' ')' '|' '(' 8.8.1.0 : '[^.][.]([^.])' ')' - '(' 8.0.0.0 : '[^.][.]([^.])' ')' '|' '(' 8.8.1.0.0 : '[^.][.][^.][.]([^.])' ')' - '(' 8.0.0.0.0 : '[^.][.][^.][.]([^.])' ')' '|' '(' 8.8.1.0.0.0 : '[^.][.][^.][.][^.][.]([^.])' ')' - '(' 8.0.0.0.0.0 : '[^.][.][^.][.][^.][.]([^.])' ')'
• [[ 8 -gt 0 ]]
• [[ -n '' ]]
• echo 'Migrating database...'
• exec_as_git bundle exec rake db:migrate
  Migrating database...
  ++ whoami
• [[ root == git ]]
• sudo -HEu git bundle exec rake db:migrate

Start with docker-compose.yml and the supplied docker logs output, reproducing the failure through the database migration step after COUNT=64. Trace the db:migrate entry point and its MySQL connection, then verify that the compose deployment completes startup without stopping there.