use specific (old) image for now

leftover/docker-compose.yml

 version: '3'
 services:
     nginx-rtmp:
-        image: alfg/nginx-rtmp:latest
+        # image: alfg/nginx-rtmp:latest
+        image: 9313fe22d925
         restart: unless-stopped
         ports:
             - 1935:1935

nginx-ssl/docker-compose.yml

 version: '3'
 services:
     nginx-ssl:
-        image: alfg/nginx-rtmp:latest
+        # image: alfg/nginx-rtmp:latest
+        image: 9313fe22d925
         restart: unless-stopped
         ports:
             - 80:80