some fixes for docker developer tools (openemr#3257)

CONTRIBUTING.md

@@ -36,11 +36,11 @@ You will need a "local" version of OpenEMR to make changes to the source code. T
  ```
  - To create a report of PSR2 code styling issues (this takes several minutes):
  ```sh
- docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c 'cd openemr; php -d memory_limit=512M /root/.composer/vendor/squizlabs/php_codesniffer/bin/phpcs -n --extensions=php,inc --standard=ci/phpcs.xml --report=full .'
+ docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c 'cd openemr; php -d memory_limit=640M /root/.composer/vendor/squizlabs/php_codesniffer/bin/phpcs -n --extensions=php,inc --standard=ci/phpcs.xml --report=full .'
  ```
  - To fix PSR2 code styling issues (this takes several minutes):
  ```sh
- docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c 'cd openemr; php -d memory_limit=512M /root/.composer/vendor/squizlabs/php_codesniffer/bin/phpcbf -n --extensions=php,inc --standard=ci/phpcs.xml .'
+ docker exec -i $(docker ps | grep _openemr | cut -f 1 -d " ") sh -c 'cd openemr; php -d memory_limit=640M /root/.composer/vendor/squizlabs/php_codesniffer/bin/phpcbf -n --extensions=php,inc --standard=ci/phpcs.xml .'
  ```
  - To check PHP parsing errors (this takes several minutes):
  ```sh

ci/phpcs.xml

@@ -26,6 +26,8 @@
  </properties>
  </rule>
 
+ <exclude-pattern>*/sites/default/sqlconf.php</exclude-pattern>
+ <exclude-pattern>*/sites/default/documents/*</exclude-pattern>
  <exclude-pattern>*/vendor/*</exclude-pattern>
  <exclude-pattern>*/node_modules/*</exclude-pattern>
  <exclude-pattern>*/public/assets/*</exclude-pattern>