Update Dockerfile

Dockerfile

@@ -1,14 +1,17 @@
-FROM rocker/r-base:latest
+FROM rocker/r-base:4.2.3
 
-WORKDIR /code
+WORKDIR /app
 
 RUN install2.r --error \
     shiny \
+    BioAge \
     dplyr \
     ggplot2 \
     readr \
     ggExtra
-    
-COPY . .
 
-CMD ["R", "--quiet", "-e", "shiny::runApp(host='0.0.0.0', port=7860)"]
+COPY app.R .
+
+EXPOSE 7860
+
+CMD ["R", "-e", "shiny::runApp(host='0.0.0.0', port=7860)"]