Copying from notepad++ also copies the name of the file at a random location

This one’s weird:

(notepad++):

### Init mongo-express
docker run -d 
    --network mongo-network 
    --name mongo-express 
    -p 8081:8081 
    -e ME_CONFIG_OPTIONS_EDITORTHEME="ambiance" 
    -e ME_CONFIG_MONGODB_SERVER="mongodb" 
    -e ME_CONFIG_BASICAUTH_USERNAME="<user>" 
    -e ME_CONFIG_BASICAUTH_PASSWORD="<pass>" 
    -e ME_CONFIG_MONGODB_URL="mongodb://<user>:<pass>@mongodb:27017/" 
    --name mongo-express mongo-express

adding image for clarity:

Copying the above into a cygwin terminal produces:

 docker run -d 
>     --network mongo-network 
>     --name mongo-express 
>     -p 8081:8081 
>     -e ME_CONFIG_OPTIONS_EDITORTHEME="ambiance" 
>     -e ME_CONFIG_MONGODB_SERVER="mongodb" 
>     -e ME_CONFIG_BASICAUTH_USERNAME="<user>" 
>     -e ME_CONFIG_BASICAUTH_PASSWORD="<pass>" 
> notes.md -e ME_CONFIG_MONGODB_URL="mongodb://<user>:<pass>@mongodb:27017/" 
>     --name mongo-express mongo-express

The notes.md argument is the name of the file. How and why does it get pasted?