added note regarding "host.containers.internal"

entrypoint.sh

@@ -1,8 +1,9 @@
 #!/bin/sh
 set -e
 
-# potential alternative: host.docker.internal
-# docker v20.10.0 vhttps://github.com/moby/moby/pull/40007
+# potential alternatives: host.docker.internal, host.containers.internal
+# docker v20.10.0 https://github.com/moby/moby/pull/40007
+# podman v3.2.0 https://github.com/containers/podman/pull/9972
 export DOCKER_HOST_ADDRESS="$(ip route show default | grep default | cut -d ' ' -f 3)"
 
 set -x