Use pica-ci-base for set-variables job as we need git

.gitlab-ci.yml

@@ -52,6 +52,7 @@ pica-ci-base:
 set-variables:
   stage: ci-base
   tags: [build]
+  image: $REGISTRY_PROD/pica-ci-base
   script:
     - chmod +x ./get-modified-image.sh
     - ./get-modified-image.sh

pica-etherpad/entrypoint.sh

@@ -28,7 +28,7 @@ RESULT=`mysql -u${ETHERPAD_DB_USER} -p${ETHERPAD_DB_PASSWORD} \
 	-e "SHOW DATABASES LIKE '${ETHERPAD_DB_NAME}'"`
 
 if [ "$RESULT" != $ETHERPAD_DB_NAME ]; then
-	# mysql database does not exist, create it
+	# Mysql database does not exist, create it
 	echo "Creating database ${ETHERPAD_DB_NAME}"
 
 	mysql -u${ETHERPAD_DB_USER} -p${ETHERPAD_DB_PASSWORD} -h${ETHERPAD_DB_HOST} \