Update Dockerfile

Dockerfile

@@ -1,29 +1,24 @@
-FROM rocker/r-base:latest
-
-# Install system dependencies for R packages
-RUN apt-get update && apt-get install -y --no-install-recommends \
-    libudunits2-dev \
-    libgdal-dev \
-    libgeos-dev \
-    libproj-dev \
-    && apt-get clean \
-    && rm -rf /var/lib/apt/lists/*
+# Use rocker/geospatial as the base image to include necessary geospatial libraries
+FROM rocker/geospatial:latest
 
 WORKDIR /code
 
-RUN install2.r --error \
- shiny \
- dplyr \
- ggplot2 \
- readr \
- DT \
- ggExtra \
- shinydashboard \
- sf \
- cartogram \
- rnaturalearth \
- rnaturalearthdata
-    
+# Install R packages, specifying the CRAN repository for reliability
+RUN install2.r --error --repos "https://cran.r-project.org" \
+    shiny \
+    dplyr \
+    ggplot2 \
+    readr \
+    DT \
+    ggExtra \
+    shinydashboard \
+    sf \
+    cartogram \
+    rnaturalearth \
+    rnaturalearthdata
+
+# Copy the current directory into the container
 COPY . .
 
-CMD ["R", "--quiet", "-e", "shiny::runApp(host='0.0.0.0', port=7860)"]
+# Run the Shiny app
+CMD ["R", "--quiet", "-e", "shiny::runApp(host='0.0.0.0', port=7860)"]