Add database helpers in dev.sh

dev.sh

@@ -26,6 +26,12 @@ _usage() {
         echo "    $prog front"
         echo "        Install the JS packages and run the frontend"
         echo ""
+        echo "    $prog migrate [args]"
+        echo "        Runs the migrate command with the given parameters"
+        echo ""
+        echo "    $prog db-shell"
+        echo "        Get a psql shell on the database"
+        echo ""
         echo "    $prog db-init"
         echo "        Refresh the informations (imdb / movies / shows) needed"
         echo "        before the first run"
@@ -114,6 +120,17 @@ canape_logout() {
 }
 
 case $1 in
+	migrate)
+		shift
+		_migrate -path "$MIGRATION_SCHEMA" "$@"
+		;;
+	db-shell)
+		docker run -it --rm \
+			-e PGPASSWORD="$DB_PASS" \
+			--link canape_postgresql_dev:postgres \
+			postgres:9.5 \
+			psql -h postgres -U "$DB_USER" -d "$DB_DATABASE"
+		;;
 	back)
 		# Apply the migrations
 		_migrate -path "$MIGRATION_SCHEMA" up