Typo in PHP version check

Author: ajoy39

workspace/Dockerfile

@@ -334,7 +334,7 @@ ARG INSTALL_PCOV=false
 
 RUN if [ ${INSTALL_PCOV} = true ]; then \
   if [ $(php -r "echo PHP_MAJOR_VERSION;") = "7" ]; then \
-    if [ $(php -r "echo PHP_MAJOR_VERSION;") != "0" ]; then \
+    if [ $(php -r "echo PHP_MINOR_VERSION;") != "0" ]; then \
       pecl install pcov && \
       echo "extension=pcov.so" >> /etc/php/${LARADOCK_PHP_VERSION}/cli/php.ini && \
       echo "pcov.enabled" >> /etc/php/${LARADOCK_PHP_VERSION}/cli/php.ini \