Fix double slash in S3 path.

Author: istepanov

backup.sh

@@ -14,7 +14,7 @@ if [[ -z "$TARGET_FOLDER" ]]; then
         exit 1
     fi
 
-    mongodump --uri "$MONGO_URI" --gzip --archive | aws s3 cp - "$TARGET_S3_FOLDER/backup-$DATE.tar.gz"
+    mongodump --uri "$MONGO_URI" --gzip --archive | aws s3 cp - "${TARGET_S3_FOLDER%/}/backup-$DATE.tar.gz"
     echo "Mongo dump uploaded to $TARGET_S3_FOLDER"
 else
     # save dump locally (and optionally to AWS S3)