bzip2 won't install without libbz2-dev

[benwaffle]

I think you need sudo apt-get install libbz2-dev anywhere you want docker-php-ext-install bz2. Previously, it was installed by libmagickwand-dev so I'm not sure why it's no longer there.

[benwaffle]

Maybe because of this line?

docker/15.0/apache/Dockerfile

Line 78 in cb71d98

apt-get purge -y --auto-remove -o APT::AutoRemove::RecommendsImportant=false; \

[J0WI]

The bz2 extension is not installed by default, please have a look at the examples if you need it:
https://github.com/nextcloud/docker/tree/master/.examples/dockerfiles/full

[benwaffle]

I know. I think we need to add the apt-get install line to https://github.com/nextcloud/docker/blob/master/.examples/README.md#php-module-bz2

[J0WI]

Would you like to open a PR for it?

[J0WI]

Closing in favour of #1964