Yes, you can, but we recommend that you recreate the image.

The command to copy files or foldes into a container is:

docker cp <TARGET> <CONTAINER>:<SOURCE>

Example:
Copying a Plug-in-Folder My.Module.DoesSomething into the Modules folder /app/Modules:

docker cp My.Module.DoesSomething web:/app/Modules

docker cp <CONTAINER>:<SOURCE> <TARGET>

Example:

Copying the Content of the Plug-in-Folder /app/Modules from the Container with the name web to the Host-Directory ./Modules_From_Container :

docker cp web:/app/Modules ./Modules_From_Container

docker exec <CONTAINER> rm -rf <YourFile>

Examples:

Delete manifest.json file in Modules-Folder /My.Module.DoesSomething:

docker exec web rm -rf /app/Modules/My.Module.DoesSomething/manifest.json

Delete wwwroot folder in Modules-Folder /My.Module.DoesSomething:

docker exec web rm -rf /app/Modules/My.Module.DoesSomething/wwwroot

If Smartstore is started together with MySQL or MS SQL as services, the container name or the service name can simply be used as the host name.

Otherwise, detailled information about the container can be read out with the command docker inspect <CONTAINER>.

Example:

The MySQL container has the name mysql.

The command

docker inspect mysql

returns the following information, beside others:

Open

The host name "mysql" of the MySQL server is displayed under "Aliases".