Ansible-bender

* A fixup release: twine refused an upload due to incorrect URL (fix: 216ff3f101494daf1bdaf4f427fe17fa108e100d)

Features

* File operations are now also cached (examples: "file", "copy", "synchronize", "unarchive", and "template"), by [kjohnson0451](https://github.com/kjohnson0451), [#246](https://github.com/ansible-community/ansible-bender/pull/246)
* Use `AnsibleVarsParser` class to process ansible variables, by [quietjoy](https://github.com/quietjoy), [#287](https://github.com/ansible-community/ansible-bender/pull/287)
* It allows `ansible_bender` variables to be specified across group and host var files.
* Enable passing extra args to `podman run` and `ansible run`, by [ArmaanT](https://github.com/ArmaanT), [#278](https://github.com/ansible-community/ansible-bender/pull/278)
* `import_playbook` statements are now supported, by [themkat](https://github.com/themkat), [#268](https://github.com/ansible-community/ansible-bender/pull/268)
* Python interpreter locations are now cached for each base image, by [themkat](https://github.com/themkat), [#267](https://github.com/ansible-community/ansible-bender/pull/267)

Fixes

* SELinux checks are now dropped since they are no longer relevant, by [quietjoy](https://github.com/quietjoy), [#285](https://github.com/ansible-community/ansible-bender/pull/285)
* Vagrant development environment now works again, by [quietjoy](https://github.com/quietjoy), [#286](https://github.com/ansible-community/ansible-bender/pull/286)
* Qualified image names are now used to reference images instead of short-names, by [tpo](https://github.com/tpo), [#263](https://github.com/ansible-community/ansible-bender/pull/263)

Features

* Make it possible to set entrypoint for a working_container, by [Smeds](https://github.com/Smeds), [#232](https://github.com/ansible-community/ansible-bender/pull/232)

* Add sphinx based docs with read-the-docs theme for ansible-bender, by [kmehant](https://github.com/kmehant), [#215](https://github.com/ansible-community/ansible-bender/pull/215)
* Available at https://ansible-community.github.io/ansible-bender/build/html/index.html

Fixes

* Make `buildah_from_extra_args` actually work, by [TomasTomecek](https://github.com/TomasTomecek), [#217](https://github.com/ansible-community/ansible-bender/pull/217)

* Python packaging was polished, by [gordonmessmer](https://github.com/gordonmessmer), [#227](https://github.com/ansible-community/ansible-bender/pull/227), [224](https://github.com/ansible-community/ansible-bender/pull/224), [#225](https://github.com/ansible-community/ansible-bender/pull/225)

Fixes

* `clean` command now works properly.
* If bender can't create a container, a useful error message is now being
printed.

Features

* Warn when you request a change to UID while running in rootless mode (user
namespaces are tricky).
* If an image build failed, bender tagged the image with a `-failed` suffix so
it could be inspected further. Now bender also prepends timestamp so one
image is not being overwritten over and over.

Minor

* Improvements to documentation in README and `--help` output.

Thank you to all the contributors! You are awesome!

And special thanks to kmehant, our [Red Hat Open Source Contest 2019](https://research.redhat.com/red-hat-open-source-contest/) student.

Features

* You can now pass extra arguments to `buildah from` call when bender creates
new build container. This can be done from CLI using
`--extra-buildah-from-args` option of build command or in the playbook:
`vars → ansible-bender → buildah_from_extra_args`. Thanks to jordemort 140
* One can print bender's version using `-V/--version` options.
* The final image build by bender can now be squashed — all layers merged into
one. This can be done with the `--squash` option or in the playbook: `vars →
ansible-bender → squash`. jordemort 154
* Entrypoints now can be set! Aside from default container commands. Similar
drill: `--entrypoint` or `vars → ansible-bender → target_image → entrypoint`,
thanks you, slopedog 155
* Build times in `list-builds` are now more readable, enjoy! Thanks to kmehant
161
* Bender can now locate platform-python of RHEL 8 and CentOS 8, thanks to
hhenkel 171
* When running bender in debug mode (--debug), ansible stdout callback plugin
is set to debug (`ANSIBLE_STDOUT_CALLBACK=debug`). kmehant 175
* Ansible executes a playbook in the buildah container using `buildah run`
command. Before bender gets to that point, it tries to create a no-op
container (`buildah from --name $container $base_image && buildah run
$container true`) first to verify that the container runtime is correctly set
up. kmehant 174
* We have two new subcommands:
* `init` — create a template playbook in the current working directory so you
can get on-board bender's train more easily. kmehant 184
* `clean` — clean images from database which are no longer present on disk
kmehant 180

Bug fixes

* Buildah 1.7.3 introduced a backwards-incompatible change to `commit` command
which required changes in bender's code. Bender is now able to work with
both: buildah `< 1.7.3` and `>= 1.7.3`. CentOS 8.0 and RHEL 8.0 have buildah
`< 1.7.3`.
* Bender is using file locking when using its database (`~/.cache/ab/db.json`),
the locks are now atomic thanks to kmehant 176
* When you set bender-specific variables in your playbook (`vars →
ansible-bender`) and there is a typo in any of the variables or the variable
is not recognized, bender exits and informs you about this problem — we have
implemented this to prevent typos in the configuration so that you would not
be able to build invalid images. kmehant 189
* Bender no longer prints output from buildah pull as errors. kmehant 195

Minor

* [Contribution guide](/CONTRIBUTING.md) is now placed in the upstream repo.
* You can now invoke ansible-bender directly from the upstream git repo using
the common python way:

$ python3 -m ansible_bender --help

kmehant 160
* Bender is now using [Packit project](https://packit.dev/) for continuous integration.

Changes

* Intermediate image layers are no longer tagged with a name. This was required
by buildah, which is no longer the case since the 1.8 release. You can have
the old behavior by adding `verbose_layer_names: true` to the root of the
configuration.

Bug fixes

* `list-builds` should no longer error out after an upgrade.
* Bender incorrectly printed output of `buildah inspect $base_image` which
cluttered the output a lot - that's no longer the case.