The previous entrypoint script used 'set -euo pipefail', which caused runtime errors
because /bin/sh (Dash/BusyBox) does not support 'pipefail'. This commit makes the
entrypoint fully POSIX-safe, adds robust fallbacks for missing scripts, and improves
logging. Also removes a trailing newline in the navigator Docker Compose template.
Related ChatGPT discussion: https://chatgpt.com/share/68eab0b7-7a64-800f-a8aa-e7d7262a262e
• Build a custom image and replace upstream entrypoint with docker-entrypoint-custom.sh (strict fail on flag script).
• Introduce set_flags.php and wire via ESPOCRM_SET_FLAGS_SCRIPT; apply flags at container start; clear cache afterwards.
• Keep exactly one Docker volume (data:/var/www/html/); drop separate custom/extensions mounts.
• Compose: use custom image, add healthchecks & depends_on for daemon/websocket; keep service healthy gating.
• Ansible: deploy scripts, build & up via handlers; patch siteUrl as www-data; run upgrade non-fatal; always run flag setter.
• Vars/Env: add ESPO_INIT_* toggles and ESPOCRM_SET_FLAGS_SCRIPT; refactor variables for scripts & custom image paths.
Conversation context: https://chatgpt.com/share/68dd1992-020c-800f-bcf5-2db60cb4aab2
