build_sdk_container_image: force removal of running container

At least with Podman it's not possible to call "container rm" on a
running container without the force flag.
Add the force flag which is also used elsewhere already.

Author: pothos

build_sdk_container_image

@@ -178,7 +178,7 @@ else
         rm "${tarball_copied}"
     fi
 
-    $docker container rm "${toolchains_container}"
+    $docker container rm -f "${toolchains_container}"
 
     docker_interface="docker0"
     if "${is_podman}"; then