wordpress/rootfs/etc/cont-init.d/10-init-wordpress

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#!/usr/bin/with-contenv bash
# Designed to replace original, overcomplicated entrypoint script from official wordpress docker repository
# Why not use already available tools instead?!
# Register exit handler
trap scriptExitHandler EXIT
function scriptExitHandler() {
LAST_EXIT_CODE=$?
if [ "${LAST_EXIT_CODE}" = "0" ]; then
echo "> Script finished successfully"
exit "${LAST_EXIT_CODE}"
fi
echo "> Script finished with an error"
exit "${LAST_EXIT_CODE}"
}
# Applies patch for making WordPress updates impossible
function disableUpdatesPatch() {
DISABLE_WP_UPDATES="${ENFORCE_DISABLE_WP_UPDATES:-true}"
if [ "${DISABLE_WP_UPDATES}" != "false" ]; then
echo "> Disabling WordPress updates..."
patch /var/www/html/wp-admin/update-core.php </etc/wp-mods/wp-admin-update-core.patch
echo "> Making the patched file read-only..."
chmod 0440 /var/www/html/wp-admin/update-core.php
fi
}
# Deletes known WordPress files
function deleteWordPress() {
echo "> Deleting WordPress installation (core files)"
# Instead of one-line find, we're taking a bit conservative approach and separating file and directory removal
# This is to ensure that this script never runs on unintended set of files as it's data loss risk
rm -rf "/var/www/html/"{wp-includes,wp-admin}
rm -rf "/var/www/html/"{.htaccess,index.php,license.txt,readme.html,wp-activate.php,wp-blog-header.php,wp-comments-post.php,wp-config-sample.php.php,wp-cron.php,wp-links-opml.php,wp-load.php,wp-login.php,wp-mail.php,wp-settings.php,wp-signup.php,wp-trackback.php,xmlrpc.php}
}
# Main function
function main() {
# Removes trailing zero if found
# This is required due to inconsistencies between WodPress docker image versioning and wp-cli core download
# If patch version is 0, it is not considered by wp-cli.
WP_VERSION=$(echo "${WP_VERSION:?}" | sed --expression='s/.0$//g')
WP_LOCALE="${WP_LOCALE:?}"
echo "> Verifying 'WordPress ${WP_VERSION}' installation..."
WP_INSTALLED_VERSION="$(wp core version)"
set -e
if [ -z "${WP_INSTALLED_VERSION}" ]; then
echo "> WordPress is not present"
echo "> Downloading 'WordPress ${WP_VERSION}'..."
deleteWordPress
wp core download --locale="${WP_LOCALE}" --version="${WP_VERSION}"
disableUpdatesPatch
elif [ "${WP_INSTALLED_VERSION}" != "${WP_VERSION}" ]; then
echo "> WordPress version mismatch"
echo "> Expected version: ${WP_VERSION}"
echo "> Detected version: ${WP_INSTALLED_VERSION}"
echo "> Scraping current files"
deleteWordPress
echo "> Downloading WordPress version '${WP_VERSION}'..."
wp core download --locale="${WP_LOCALE}" --version="${WP_VERSION}"
disableUpdatesPatch
else
echo "> Identified 'WordPress ${WP_VERSION}'"
fi
}
main "${@}"
exit $?