Writes custom ENV variables into aws elastic beanstalk

export_host_env_vars.sh

files:
  "/opt/elasticbeanstalk/hooks/appdeploy/pre/02export_host_env_vars.sh":
    mode: "000755"
    owner: root
    group: root
    content: |
      #!/usr/bin/env bash
      echo Defaults:root \!requiretty >> /etc/sudoers
      for envvar in `jq '.optionsettings | {"aws:elasticbeanstalk:application:environment"}[] | .[]' /opt/elasticbeanstalk/deploy/configuration/containerconfiguration`
      do
        host_vars="${envvar//\"/}";
        host_vars="${host_vars/=/ }";
        sed -i "/ENV HOST_VARS inject_here/a ENV $host_vars" /var/app/current/Dockerfile
      done