read values from env and add Dockerfile

docs/docker_4play.md

@@ -0,0 +1,48 @@
+### Running 4get and 4play via docker guide
+
+This setup will run both 4get and the 4play sidecar 
+
+# Docker compose 
+
+```
+# docker-compose.yaml
+
+services:
+  fourget:
+    image: luuul/4get:latest
+    restart: unless-stopped
+    environment:
+      - FOURGET_PROTO=http
+      - FOURGET_SERVER_NAME=4get.ca
+      - FOURGET_FPLAY_EXTERNAL_ENDPOINT=http://fourplay:3000
+      - FOURGET_FPLAY_PASSWORD=cnc
+      - FOURGET_FPLAY_TIMEOUT=30000
+      - FOURGET_FPLAY_ENABLE_API=true
+    ports:
+      - "80:80"
+  fourplay:
+    image: luuul/4get-4play:latest
+    environment:
+      - FOURPLAY_PORT=3030
+      - FOURPLAY_PASSWORD=cnc
+      - FOURPLAY_COMMAND_TIMEOUT=5000
+    ports:
+      - "3000:3000"
+      - "3030:3030"
+
+```
+
+There is a example docker compose file available [here](../extra/4play/docker-compose.yaml)
+
+# Steps
+
+1. start the services with
+
+```
+docker compose up -d
+
+```
+
+2. configure firefox
+
+folllow the steps in [configure](./configure.md) for firefox setup