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MIGRATING.md

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Migrating from v3 to v4 images

Important changes:

  • v3 images are based on Ubuntu 18.04. v4 images are based on Ubuntu 20.04.
  • Internally, the image will attempt to set up extensions / parameters on container startup (in the image entry point), but also when PHP is run. This should help alleviate a part of the problems when the entrypoint is overloaded by the user.

Migrating from v2 to v3 images

Important changes:

  • v2 images are based on a Debian Stretch. v3 images are based on Ubuntu 18.04.
  • Internally, v3 images are built from the Ondrej PPA. This is a radical change from v2 that was built from the official PHP Docker image. As a result, the v3 image do not have PECL installed, nor a build environment. This makes the v3 images ~200MB lighter.

Changes in extensions:

  • The following extensions are now enabled by default: calendar exif pcntl shmop sockets sysvmsg sysvsem sysvshm wddx zip
  • The sqlite3 extension was previously enabled by default, but must now be enabled manually