- All images are based on Alpine Linux
- PHP 5.3 is based on Alpine Linux 3.4
- PHP 5.4 is based on Alpine Linux 3.7
- PHP 5.5 & 5.6 are based on Alpine Linux 3.8
- PHP 7.0 is based on Alpine Linux 3.7
- PHP 7.1 is based on Alpine Linux 3.12
Please note that PHP 5.3 will not compile on ARM64 architecture as the base Alpine Linux 3.4 is not available for AARCH64