[TOOLS] Improve configure script to disallow reserved database names

bin/configure

@@ -7,23 +7,15 @@ done
 
 cd "${git_dir}" || exit
 
-if [ -e ./docker/bootstrap/bootstrap.env ]; then
-    . ./docker/bootstrap/bootstrap.env
-fi
+. ./docker/bootstrap/bootstrap.env
 
-# TODO Add configuration
-cp docker-compose.yaml.in docker-compose.yaml
 
 while :; do
     printf "DBMS (postgres|mariadb): " && read -r dbms
-    echo "${dbms}" | grep -Eq 'postgres|mariadb' && break
-done
-
-while :; do
-    printf "Social database name: " && read -r db
-    echo "${db}" | grep -vEq 'postgres' && break
+    [ $(echo "${dbms}" | grep -E 'postgres|mariadb') ] && break
 done
 
+printf "Social database name: " && read -r db
 [ "${dbms}" = 'mariadb' ] && printf "Database user: " && read -r user
 printf "Database password: " && read -r password
 printf "Sitename: " && read -r sitename
@@ -32,7 +24,7 @@ printf "Admin password: " && read -r admin_password
 
 while :; do
     printf "Site profile (public|private|community|single_user): " && read -r profile
-    echo "${profile}" | grep -Eq 'public|private|community|single_user' && break
+    [ $(echo "${profile}" | grep -E 'public|private|community|single_user') ] && break
 done
 
 mkdir -p ./docker/db