Update Dockerfile

Dockerfile

@@ -1,4 +1,8 @@
-FROM unixfox/pupflare:latest
-ENV ADDRESS $SPACE_HOST \
- PORT 7860
-RUN printenv
+FROM ubuntu:latest
+
+ENV PORT 7860
+
+RUN apt-get update && apt-get upgrade -y
+RUN apt-get install docker -y
+
+CMD ["sh", "-c", "docker run -d -p 7860:7860 quay.io/unixfox/pupflare"]