Reconfigure the PHP Handler to be conditional on file existence

Set the handler to use for files whose extension ends in `.php`.
This is a workaround for docker-library/php#1576
The `FallbackResource` is a default Handler action which is only used if a Handler has not already been applied.
The docker/php image sets the handler unconditionally for any file whose name matches `.php`.
This configuration block unsets the default handler, and instead only applies it if the file exists.

Author: andrewnicols

assets/web/apache2_faildumps.conf

@@ -7,3 +7,15 @@
 </Location>
 
 Alias /_/faildumps /var/www/behatfaildumps
+
+# Set the handler to use for files whose extension ends in `.php`.
+# This is a workaround for https://github.com/docker-library/php/issues/1576
+# The FallbackResource is a default Handler action which is only used if a Handler has not already been applied.
+# The docker/php image sets the handler unconditionally for any file whose name matches `.php`.
+# This configuration block unsets the default handler, and instead only applies it if the file exists.
+<FilesMatch \.php$>
+  SetHandler none
+  <If "-f %{REQUEST_FILENAME}">
+    SetHandler application/x-httpd-php
+  </If>
+</FilesMatch>