@@ -13,9 +13,10 @@ docker-php-ext-configure gd --with-freetype --with-jpeg
 docker-php-ext-install -j2 bcmath gd intl pdo_mysql zip
 printf 'memory_limit=1G\n' > "$PHP_INI_DIR/conf.d/ci.ini"
 
-# Verify Composer's installer before executing it, and retain the PHP 8.2-compatible 2.8 line.
-curl --fail --silent --show-error --location https://composer.github.io/installer.sig --output /tmp/composer-installer.sig
-curl --fail --silent --show-error --location https://getcomposer.org/installer --output /tmp/composer-setup.php
+# Retry temporary download failures, then verify the installer before executing it.
+# Retain the PHP 8.2-compatible Composer 2.8 line.
+curl --fail --silent --show-error --location --retry 3 --retry-all-errors --retry-delay 2 --connect-timeout 15 --max-time 60 https://composer.github.io/installer.sig --output /tmp/composer-installer.sig
+curl --fail --silent --show-error --location --retry 3 --retry-all-errors --retry-delay 2 --connect-timeout 15 --max-time 60 https://getcomposer.org/installer --output /tmp/composer-setup.php
 php -r 'exit(hash_equals(trim(file_get_contents("/tmp/composer-installer.sig")), hash_file("sha384", "/tmp/composer-setup.php")) ? 0 : 1);'
 php /tmp/composer-setup.php --version=2.8.12 --install-dir=/usr/local/bin --filename=composer
 rm /tmp/composer-installer.sig /tmp/composer-setup.php