Subversion behind apache 2.4 proxy - Connection refused

Hi!

I have subversion running in a Docker container and everything works 
fine if I connect directly to it, but I really need to run subversion 
behind an Apache 2.4 proxy. For now I'm not using https, just trying to 
get it to work with as simple setup as possible.

I have tried to use the FAQ instructions, 
https://subversion.apache.org/faq.html#reverseproxy, but they are 
written for an older Apache version so I have tried to modify them for 2.4.

Browsing the repos with Firefox works fine but it fails with the svn 
client and SmartSVN:

> svn info http://localhost/svn/test/svn-test-project
> svn: E170013: Unable to connect to a repository at URL 
> 'http://localhost/svn/test/svn-test-project'
> svn: E000111: Error running context: Connection refused
This is my proxy configuration:
>    ProxyRequests Off
>    ProxyVia on
>
>    <Proxy *>
>        Require all granted
>    </Proxy>
>
>    ProxyPass /svn/ http://localhost:7280/svn/
>    <Location /svn/>
>      ProxyPassReverse http://localhost:7280/svn/
>      <Limit OPTIONS PROPFIND GET REPORT MKACTIVITY PROPPATCH PUT 
> CHECKOUT MKCOL MOVE COPY DELETE LOCK UNLOCK MERGE>
>          Require all granted
>      </Limit>
>      RewriteCond %{HTTP:Destination} .+/(svn/.*$)
>      RewriteRule ^/svn/.* - [E=MyDestination:http://localhost:7280/%1,PT]
>      RequestHeader set Destination %{MyDestination}e env=MyDestination
> </Location>

When I use the browser all accesses are logged but with the svn client 
nothing is logged to the access- or error logs, even with log level debug.

Hope someone can see what is wrong with my configuration.

TIA,
Gunnar