Export SVN repository
It's quite straightforward to dump your SVN and import it back
svnadmin dump /path/to/your/old/repo > backup.dump
svnadmin load /path/to/your/new/repo < backup.dump.dmpIf you are in a docker, it might be that you do not have enough space in your docker. It will be possible using redirects the output.
First position yourself in the folder you want the dump to end up.
Then dump the file to your .dmp file.
cd /tmp
docker exec -it edf77623c9207 svnadmin dump /home/svn/YourRepository > YourRepository_svn.dmp