php7-xmlreader required for WordPress Coding Standards beta container image

[lucyllewy]

I've tried using the beta docker image of codeclimate-phpcodesniffer to get access to a more recent phpcs build than is in stable. (I need access to disabling specific sniffs on a single line as documented at https://github.com/squizlabs/PHP_CodeSniffer/wiki/Advanced-Usage#ignoring-parts-of-a-file. The inline // phpcs:ignore form is only available in phpcs since version 3.2.0, where the stable docker image by codeclimate is still on 2.9.1.

When I run the beta docker image I am greeted with the following log showing that the container is missing the php7-xmlreader package from the Alpine repository.

Log of execution

$ docker run   --interactive --tty --rm   --env CODECLIMATE_CODE="$PWD"   --volume "$PWD":/code   --volume /var/run/docker.sock:/var/run/docker.sock   --volume /tmp/cc:/tmp/cc   codeclimate/codeclimate analyze -e phpcodesniffer
Starting analysis
Running phpcodesniffer: Done!
error: (CC::CLI::Analyze::EngineFailure) engine phpcodesniffer failed with status 1 and stderr
Unable to find image 'codeclimate/codeclimate-phpcodesniffer:beta' locally
beta: Pulling from codeclimate/codeclimate-phpcodesniffer
5758d4e389a3: Already exists
4ae1f45a9f69: Pulling fs layer
0676d8c6ca5f: Pulling fs layer
5dd9411e7f0f: Pulling fs layer
c0105a21377e: Pulling fs layer
7072198dee72: Pulling fs layer
119f7d69fd65: Pulling fs layer
f4466a97c155: Pulling fs layer
b5fd0274c371: Pulling fs layer
c0105a21377e: Waiting
7072198dee72: Waiting
119f7d69fd65: Waiting
f4466a97c155: Waiting
b5fd0274c371: Waiting
0676d8c6ca5f: Download complete
4ae1f45a9f69: Verifying Checksum
4ae1f45a9f69: Download complete
4ae1f45a9f69: Pull complete
0676d8c6ca5f: Pull complete
5dd9411e7f0f: Verifying Checksum
5dd9411e7f0f: Download complete
5dd9411e7f0f: Pull complete
7072198dee72: Download complete
c0105a21377e: Download complete
c0105a21377e: Pull complete
7072198dee72: Pull complete
f4466a97c155: Verifying Checksum
f4466a97c155: Download complete
b5fd0274c371: Verifying Checksum
b5fd0274c371: Download complete
119f7d69fd65: Verifying Checksum
119f7d69fd65: Download complete
119f7d69fd65: Pull complete
f4466a97c155: Pull complete
b5fd0274c371: Pull complete
Digest: sha256:670d7b4e245222e6735ccc29b7548baffd053dd9f267fbb0f0448af08d46feae
Status: Downloaded newer image for codeclimate/codeclimate-phpcodesniffer:beta
Exception: Class 'XMLReader' not found in /usr/src/app/vendor/wp-coding-standards/wpcs/WordPress/Sniffs/WP/I18nSniff.php
#0 /usr/src/app/vendor/wp-coding-standards/wpcs/WordPress/Sniffs/WP/I18nSniff.php(464): WordPressCS\WordPress\Sniffs\WP\I18nSniff->check_text()
#1 /usr/src/app/vendor/wp-coding-standards/wpcs/WordPress/Sniffs/WP/I18nSniff.php(390): WordPressCS\WordPress\Sniffs\WP\I18nSniff->check_argument_tokens()
#2 /usr/src/app/vendor/wp-coding-standards/wpcs/WordPress/AbstractFunctionRestrictionsSniff.php(288): WordPressCS\WordPress\Sniffs\WP\I18nSniff->process_matched_token()
#3 /usr/src/app/vendor/wp-coding-standards/wpcs/WordPress/AbstractFunctionRestrictionsSniff.php(200): WordPressCS\WordPress\AbstractFunctionRestrictionsSniff->check_for_matches()
#4 /usr/src/app/vendor/wp-coding-standards/wpcs/WordPress/Sniffs/WP/I18nSniff.php(213): WordPressCS\WordPress\AbstractFunctionRestrictionsSniff->process_token()
#5 /usr/src/app/vendor/wp-coding-standards/wpcs/WordPress/Sniff.php(910): WordPressCS\WordPress\Sniffs\WP\I18nSniff->process_token()
#6 /usr/src/app/vendor/squizlabs/php_codesniffer/src/Files/File.php(498): WordPressCS\WordPress\Sniff->process()
#7 /usr/src/app/vendor/squizlabs/php_codesniffer/src/Runner.php(631): PHP_CodeSniffer\Files\File->process()
#8 /usr/src/app/Executor.php(124): PHP_CodeSniffer\Runner->processFile()
#9 /usr/src/app/vendor/barracudanetworks/forkdaemon-php/fork_daemon.php(1934): Executor->run()
#10 /usr/src/app/vendor/barracudanetworks/forkdaemon-php/fork_daemon.php(1846): fork_daemon->invoke_callback()
#11 /usr/src/app/vendor/barracudanetworks/forkdaemon-php/fork_daemon.php(1747): fork_daemon->fork_work_unit()
#12 /usr/src/app/vendor/barracudanetworks/forkdaemon-php/fork_daemon.php(1499): fork_daemon->process_work_unit()
#13 /usr/src/app/Executor.php(33): fork_daemon->process_work()
#14 /usr/src/app/engine.php(26): Executor->queueDirectory()
#15 {main}

My `.codeclimate` file

plugins:
  editorconfig:
    enabled: true
  fixme:
    enabled: true
  git-legal:
    enabled: true
  phpcodesniffer:
    enabled: true
    channel: beta
    config:
      standard: phpcs.xml.dist
  scss-lint:
    enabled: true

My `.phpcs.dist.xml` file

<?xml version="1.0"?>
<ruleset name="WordPress Coding Standards for Plugins">
	<description>Generally-applicable sniffs for WordPress plugins</description>

	<!-- What to scan -->
	<file>.</file>

	<!-- Exclude built assets -->
	<exclude-pattern>/build/</exclude-pattern>

    <!-- Exclude node_modules -->
    <exclude-pattern>*/node_modules/*</exclude-pattern>

	<!-- Exclude tests -->
	<exclude-pattern>/tests/</exclude-pattern>
    <!-- Exclude vendor directories -->
    <exclude-pattern>*/vendor/*</exclude-pattern>

	<exclude-pattern>/wp-includes</exclude-pattern>
	<exclude-pattern>scoper.inc.php</exclude-pattern>

    <!-- Colors! Nice! -->
    <arg name="colors"/>

    <!--- Only check PHP files -->
    <arg name="extensions" value="php"/>

    <!-- Commandline options for PHPCS -->
    <arg value="s"/>
    <arg value="n"/>

	<!-- Rules: Check PHP version compatibility -->
	<!-- https://github.com/PHPCompatibility/PHPCompatibility#sniffing-your-code-for-compatibility-with-specific-php-versions -->
	<!-- <config name="testVersion" value="7.0-"/> -->
	<!-- https://github.com/PHPCompatibility/PHPCompatibilityWP -->
	<!-- <rule ref="PHPCompatibilityWP"/> -->

	<rule ref="Squiz.PHP.Eval"/>

	<!-- Rules: WordPress Coding Standards -->
	<!-- https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards -->
	<!-- https://github.com/WordPress-Coding-Standards/WordPress-Coding-Standards/wiki/Customizable-sniff-properties -->
	<config name="minimum_supported_wp_version" value="5.0"/>
	<rule ref="WordPress">
		<exclude name="WordPress.Files.FileName.InvalidClassFileName"/>
		<exclude name="WordPress.Files.FileName.NotHyphenatedLowercase"/>
	</rule>
	<rule ref="WordPress-Docs" />
	<rule ref="WordPress.NamingConventions.PrefixAllGlobals">
		<properties>
			<!-- Value: replace the function, class, and variable prefixes used. Separate multiple prefixes with a comma. -->
			<property name="prefixes" type="array" value="a_z_listing,the_a_z_listing,have_a_z_,get_the_a_z,get_the_az,the_a_z,the_az"/>
		</properties>
	</rule>
	<rule ref="WordPress.WP.I18n">
		<properties>
			<!-- Value: replace the text domain used. -->
			<property name="text_domain" type="array" value="a-z-listing"/>
		</properties>
	</rule>
	<rule ref="WordPress.WhiteSpace.ControlStructureSpacing">
		<properties>
			<property name="blank_line_check" value="true"/>
		</properties>
	</rule>
	<rule ref="WordPress.NamingConventions.ValidHookName">
		<properties>
			<property name="additionalWordDelimiters" value="-"/>
		</properties>
	</rule>
</ruleset>