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<blockquote>
<div></div></blockquote>
<div class="section" id="dockerfile-changelog">
<h1>Dockerfile Changelog<a class="headerlink" href="#dockerfile-changelog" title="Permalink to this heading"></a></h1>
<p>The <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code> does not strictly follow the <a class="reference external" href="https://semver.org/">SemVer</a> approach of
Apache Airflow when it comes to features and backwards compatibility. While Airflow code strictly
follows it, the <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code> is really a way to give users a conveniently packaged Airflow
using standard container approach, so occasionally there are some changes in the building process
or in the entrypoint of the image that require slight adaptation of how it is used or built.</p>
<p>The Changelog below describes the changes introduced in each version of the docker images released by
the Airflow team.</p>
<dl class="field-list simple">
<dt class="field-odd">note</dt>
<dd class="field-odd"><p>The Changelog below concerns only the convenience production images released at
<a class="reference external" href="https://hub.docker.com/r/apache/airflow">Airflow DockerHub</a> . The images that are released
there, are usually built using the <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code> released together with Airflow. However You are
free to take latest released <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code> from Airflow and use it to build an image for
any Airflow version from the <code class="docutils literal notranslate"><span class="pre">Airflow</span> <span class="pre">2</span></code> line. There is no guarantee that it works, but if it does,
then you can use latest features from that image to build the previous Airflow versions.</p>
</dd>
</dl>
<div class="section" id="changes-after-publishing-the-images">
<h2>Changes after publishing the images<a class="headerlink" href="#changes-after-publishing-the-images" title="Permalink to this heading"></a></h2>
<p>Occasionally our images need to be regenerated using newer <code class="docutils literal notranslate"><span class="pre">Dockerfiles</span></code> or constraints.
This happens when an issue is found or a breaking change is released by our dependencies
that invalidates the already released image, and regenerating the image makes it usable again.
While we cannot assure 100% backwards compatibility when it happens, we at least document it
here so that users affected can find the reason for the changes.</p>
<table class="docutils align-default">
<colgroup>
<col style="width: 10%" />
<col style="width: 14%" />
<col style="width: 28%" />
<col style="width: 16%" />
<col style="width: 32%" />
</colgroup>
<thead>
<tr class="row-odd"><th class="head"><p>Date</p></th>
<th class="head"><p>Affected images</p></th>
<th class="head"><p>Potentially breaking change</p></th>
<th class="head"><p>Reason</p></th>
<th class="head"><p>Link to Pull Request</p></th>
</tr>
</thead>
<tbody>
<tr class="row-even"><td><p>17 June 2022</p></td>
<td><p>2.2.5</p>
<p>2.3.0-2.3.3</p>
</td>
<td><ul class="simple">
<li><p>The <code class="docutils literal notranslate"><span class="pre">Authlib</span></code> library downgraded
from 1.0.1 to 0.15.5 version</p></li>
</ul>
</td>
<td><p>Flask App Builder
not compatible with
Authlib &gt;= 1.0.0</p></td>
<td><p><a class="reference external" href="https://github.com/apache/airflow/pull/24516">https://github.com/apache/airflow/pull/24516</a></p></td>
</tr>
<tr class="row-odd"><td><p>18 Jan 2022</p></td>
<td><p>All 2.2.*, 2.1.*</p></td>
<td><ul class="simple">
<li><p>The AIRFLOW_GID 500 was removed</p></li>
<li><p>MySQL <code class="docutils literal notranslate"><span class="pre">apt</span></code> repository key changed.</p></li>
</ul>
</td>
<td><p>MySQL changed keys
to sign their packages
on 17 Jan 2022</p></td>
<td><p><a class="reference external" href="https://github.com/apache/airflow/pull/20912">https://github.com/apache/airflow/pull/20912</a></p></td>
</tr>
</tbody>
</table>
</div>
<div class="section" id="airflow-2-3">
<h2>Airflow 2.3<a class="headerlink" href="#airflow-2-3" title="Permalink to this heading"></a></h2>
<ul class="simple">
<li><p>2.3.0</p>
<ul>
<li><p>Airflow 2.3 <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code> is now better optimized for caching and “standalone” which means that you
can copy <strong>just</strong> the <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code> to any folder and start building custom images. This
however requires <a class="reference external" href="https://docs.docker.com/develop/develop-images/build_enhancements/">Buildkit</a>
to build the image because we started using features that are only available in <code class="docutils literal notranslate"><span class="pre">Buildkit</span></code>.
This can be done by setting <code class="docutils literal notranslate"><span class="pre">DOCKER_BUILDKIT=1</span></code> as an environment variable
or by installing <a class="reference external" href="https://docs.docker.com/buildx/working-with-buildx/">the buildx plugin</a>
and running <code class="docutils literal notranslate"><span class="pre">docker</span> <span class="pre">buildx</span> <span class="pre">build</span></code> command.</p></li>
<li><p>Add Python 3.10 support</p></li>
<li><p>Add support for Bullseye Debian release (Debian Buster is deprecated)</p></li>
<li><p>Add Multi-Platform support (AMD64/ARM64) in order to accommodate MacOS M1 users</p></li>
<li><p>Build parameters which control if packages and Airflow should be installed from context file were
unified</p></li>
<li><p>The <code class="docutils literal notranslate"><span class="pre">INSTALL_FROM_PYPI</span></code> arg was replaced to <code class="docutils literal notranslate"><span class="pre">AIRFLOW_IS_IN_CONTEXT</span></code> (with reverse meaning and
default changed to false)</p></li>
<li><p>The <code class="docutils literal notranslate"><span class="pre">INSTALL_FROM_DOCKER_CONTEXT_FILES</span></code> arg changed to <code class="docutils literal notranslate"><span class="pre">INSTALL_PACKAGES_FROM_CONTEXT</span></code></p></li>
</ul>
</li>
</ul>
</div>
<div class="section" id="airflow-2-2">
<h2>Airflow 2.2<a class="headerlink" href="#airflow-2-2" title="Permalink to this heading"></a></h2>
<ul class="simple">
<li><p>2.2.4
* Add support for both <code class="docutils literal notranslate"><span class="pre">.piprc</span></code> and <code class="docutils literal notranslate"><span class="pre">pip.conf</span></code> customizations
* Add ArtifactHub labels for better discovery of the images
* Update default Python image to be 3.7
* Build images with <code class="docutils literal notranslate"><span class="pre">Buildkit</span></code> (optional)
* Fix building the image on Azure with <code class="docutils literal notranslate"><span class="pre">text</span> <span class="pre">file</span> <span class="pre">busy</span></code> error</p></li>
<li><p>2.2.3
* No changes</p></li>
<li><p>2.2.2
* No changes</p></li>
<li><p>2.2.1
* Workaround the problem with <code class="docutils literal notranslate"><span class="pre">libstdcpp</span></code> TLS error</p></li>
<li><p>2.2.0
* Remove AIRFLOW_GID (5000) from Airflow images (potentially breaking change for users using it)
* Added warnings for Quick-start docker compose
* Fix warm shutdown for celery worker (signal propagation)
* Add Oauth libraries to PROD images
* Add Python 3.9 support</p></li>
</ul>
</div>
<div class="section" id="airflow-2-1">
<h2>Airflow 2.1<a class="headerlink" href="#airflow-2-1" title="Permalink to this heading"></a></h2>
<ul>
<li><p>MySQL changed the keys to sign their packages on 17 Feb 2022. This caused all released images
to fail when being extended. As result, on 18 Feb 2021 we re-released all
the <code class="docutils literal notranslate"><span class="pre">2.2</span></code> and <code class="docutils literal notranslate"><span class="pre">2.1</span></code> images with latest versions of <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code>
containing the new signing key.</p>
<p>There were subtle changes in the behaviour of some 2.1 images due to that (more details below)
Detailed <a class="reference external" href="https://github.com/apache/airflow/issues/20911">issue here</a></p>
</li>
</ul>
<dl class="field-list simple">
<dt class="field-odd">note</dt>
<dd class="field-odd"><p>that the changes below were valid before image refreshing on 18 Feb 2022.
Since all the images were refreshed on 18 Feb with the same <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code>
as 2.1.4, the changes 2.1.1 -&gt; 2.1.3 are
effectively applied to all the images in 2.1.* line.
The images refreshed have also those fixes added:</p>
</dd>
</dl>
<ul class="simple">
<li><p>All 2.1.* image versions refreshed on 18 Feb 2022 have those fixes applied:
* Fix building the image on Azure with <code class="docutils literal notranslate"><span class="pre">text</span> <span class="pre">file</span> <span class="pre">busy</span></code> error
* Workaround the problem with <code class="docutils literal notranslate"><span class="pre">libstdcpp</span></code> TLS error
* Remove AIRFLOW_GID (5000) from Airflow images (potentially breaking change for users using it)
* Added warnings for Quick-start docker compose
* Add Oauth libraries to PROD images</p></li>
</ul>
<p>Original image Changelog (before the refresh on 18 Feb 2022):</p>
<ul class="simple">
<li><dl class="simple">
<dt>2.1.4</dt><dd><ul>
<li><p>Workaround the problem with <code class="docutils literal notranslate"><span class="pre">libstdcpp</span></code> TLS error</p></li>
<li><p>fixed detection of port number in connection URL</p></li>
<li><p>Improve warnings for quick-start-docker compose</p></li>
<li><p>Fix warm shutdown for celery worker (signal propagation)</p></li>
</ul>
</dd>
</dl>
</li>
<li><dl class="simple">
<dt>2.1.3</dt><dd><ul>
<li><p>fixed auto-creation of user to use non-deprecated <code class="docutils literal notranslate"><span class="pre">create</span> <span class="pre">user</span></code> rather than <code class="docutils literal notranslate"><span class="pre">user_create</span></code></p></li>
<li><p>remove waiting for celery backend for <code class="docutils literal notranslate"><span class="pre">worker</span></code> and <code class="docutils literal notranslate"><span class="pre">flower</span></code> commands rather than <code class="docutils literal notranslate"><span class="pre">scheduler</span></code> and <code class="docutils literal notranslate"><span class="pre">celery</span></code> only</p></li>
<li><p>remove deprecated <code class="docutils literal notranslate"><span class="pre">airflow</span> <span class="pre">upgradedb</span></code> command from Airflow 1.10 in case upgrade is requested</p></li>
<li><p>Add Python 3.9 support</p></li>
</ul>
</dd>
</dl>
</li>
<li><dl class="simple">
<dt>2.1.2</dt><dd><ul>
<li><p>No changes</p></li>
</ul>
</dd>
</dl>
</li>
<li><dl class="simple">
<dt>2.1.1</dt><dd><ul>
<li><p>Fix failure of lack of default commands (failed when no commands were passed)</p></li>
<li><p>Added <code class="docutils literal notranslate"><span class="pre">_PIP_ADDITIONAL_REQUIREMENTS</span></code> development feature</p></li>
</ul>
</dd>
</dl>
</li>
<li><dl class="simple">
<dt>2.1.0</dt><dd><ul>
<li><p>Unset default <code class="docutils literal notranslate"><span class="pre">PIP_USER</span></code> variable - which caused PythonVirtualEnv to fail</p></li>
</ul>
</dd>
</dl>
</li>
</ul>
</div>
<div class="section" id="airflow-2-0">
<h2>Airflow 2.0<a class="headerlink" href="#airflow-2-0" title="Permalink to this heading"></a></h2>
<ul>
<li><p>MySQL changed the keys to sign their packages on 17 Feb 2022. This caused all released images
to fail when being extended. As result, on 18 Feb 2021 we re-released all
the <code class="docutils literal notranslate"><span class="pre">2.2</span></code> and <code class="docutils literal notranslate"><span class="pre">2.1</span></code> images with latest versions of <code class="docutils literal notranslate"><span class="pre">Dockerfile</span></code>
containing the new signing key.</p>
<p>There were no changes in the behaviour of 2.0.2 image due to that
Detailed <a class="reference external" href="https://github.com/apache/airflow/issues/20911">issue here</a> .
Only 2.0.2 image was regenerated, as 2.0.1 and 2.0.0 versions are hardly used and it is unlikely someone
would like to extend those images. Extending 2.0.1 and 2.0.0 images will lead to failures of “missing key”.</p>
</li>
<li><dl class="simple">
<dt>2.0.2</dt><dd><ul class="simple">
<li><p>Set correct PYTHONPATH for <code class="docutils literal notranslate"><span class="pre">root</span></code> user. Allows to run the image as root</p></li>
<li><p>Warn if the deprecated 5000 group ID was used for airflow user when running the image
(should be 0 for the OpenShift compatibility). Fails if the group 5000 was used with any other user
(it would not work anyway but with cryptic errors)</p></li>
<li><p>Set umask as 002 by default, so that you can actually change the user id used to run the image
(required for OpenShift compatibility)</p></li>
<li><p>Skip checking the DB and celery backend if CONNECTION_CHECK_MAX_COUNT is equal to 0</p></li>
</ul>
</dd>
</dl>
</li>
<li><dl class="simple">
<dt>2.0.1</dt><dd><ul class="simple">
<li><p>Avoid reverse IP lookup when checking DB availability. This helped to solve long delays on misconfigured
docker engines</p></li>
<li><p>Add auto-detection of redis and amqp broker ports</p></li>
<li><p>Fixed detection of all user/password combinations in URLs - helps in auto-detecting ports and testing
connectivity</p></li>
<li><p>Add possibility to create Admin user automatically when entering the image</p></li>
<li><p>Automatically create system user when different user than <code class="docutils literal notranslate"><span class="pre">airflow</span></code> is used. Needed for OpenShift
compatibility</p></li>
<li><p>Allows to exec to <code class="docutils literal notranslate"><span class="pre">bash</span></code> or <code class="docutils literal notranslate"><span class="pre">python</span></code> if specified as parameters</p></li>
<li><p>Remove <code class="docutils literal notranslate"><span class="pre">airflow</span></code> command if it is specified as first parameter of the <code class="docutils literal notranslate"><span class="pre">run</span></code> command</p></li>
</ul>
</dd>
</dl>
</li>
<li><dl class="simple">
<dt>2.0.0</dt><dd><ul class="simple">
<li><p>Initial release of the image based on Debian Buster</p></li>
</ul>
</dd>
</dl>
</li>
</ul>
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