fix: defaults for postgres fixed

scripts/postgres-container

@@ -8,12 +8,13 @@ read -p "Postgres DB name (default = postgres) " dbname
 read -p "Postgres DB username (default = postgres) " dbuser
 read -p "Postgres DB password (default = postgres) " dbpw
 
-if [[ $port == "" ]]; then
-    port=5432
-fi
+port=${port:-5432}
+dbname=${dbname:-postgres}
+dbuser=${dbuser:-postgres}
+dbpw=${dbpw:-postgres}
 
 if [[ $2 ]]; then
-    read -p "Do you wish to mount the data directory to $2/pgdata? (y/N)" domount
+	read -p "Do you wish to mount the data directory to $2/pgdata? (y/N) " domount
 
 	if [[ $domount == "y" ]]; then
 		mountarg="-v $2/pgdata:/var/lib/postgresql/data"
@@ -28,11 +29,11 @@ echo "
 => Starting container with port $port
 "
 
-docker run --rm \
+docker run \
 	$mountarg \
 	-p $port:5432 \
 	-e POSTGRES_USER=$dbuser \
 	-e POSTGRES_PASSWORD=$dbpw \
 	-e POSTGRES_DB=$dbname \
 	--name $name \
-    postgres
+	postgres &