new Dockerfile version

Dockerfile

@@ -10,20 +10,19 @@ MAINTAINER richardg867
 LABEL description = "HTTP Proxy for tunneling requests through the Internet Archive Wayback Machine"
 WORKDIR /app
 COPY . /app
-ARG DATE
 
-# Setup config.py
-ENV LISTEN_PORT=8888
-#ENV DATE=20011025
-ENV DATE_TOLERANCE=365
-ENV GEOCITIES_FIX=true
-ENV QUICK_IMAGES=true
-ENV WAYBACK_API=true
-ENV CONTENT_TYPE_ENCODING=true
-ENV SILENT=false
-ENV SETTINGS_PAGE=true
+# Setup config.json
+ARG LISTEN_PORT=8888
+ARG DATE=20011025
+ARG DATE_TOLERANCE=365
+ARG GEOCITIES_FIX=true
+ARG QUICK_IMAGES=true
+ARG WAYBACK_API=true
+ARG CONTENT_TYPE_ENCODING=true
+ARG SILENT=false
+ARG SETTINGS_PAGE=true
 
-EXPOSE 8888
+EXPOSE ${LISTEN_PORT}
 
 CMD [ "sh" , "/app/startup.sh" ]
 #CMD [ "python" , "/app/waybackproxy.py" ]