When using ADD with more than one source file, the destination must be a directory and end with a /

Question

Following is my 9th line from `Dockerfile` where I am trying to copy current directory content to `/opt/app`

```sh
Step 9/9 : ADD ./* /opt/app
```

But its failing with the following error

```sh
Step 9/9 : ADD ./* /opt/app
When using ADD with more than one source file, the destination must be a directory and end with a /
```

Karthik Divi · Accepted Answer

Make the following change to your COPY command

```diff
- ADD ./* /opt/app
+ ADD ./* /opt/app/
```

i.e add a `/` to end of the destination directory.

1 Answer