Update Dockerfile

Dockerfile

@@ -1,14 +1,29 @@
 FROM rocker/r-base:latest
 
+# Set the working directory inside the container
 WORKDIR /code
 
-RUN install2.r --error \
-    shiny \
-    dplyr \
-    sf \
-    stringr \
-    leaflet
-    
+# Install system dependencies required by R packages (sf, leaflet, etc.)
+RUN apt-get update && apt-get install -y \
+    libcurl4-openssl-dev \   # For curl support in R
+    libssl-dev \             # For SSL support in R packages like sf and leaflet
+    libxml2-dev \            # For XML support, used by some R packages
+    libgdal-dev \            # For geospatial data processing (needed by sf)
+    libgeos-dev \            # For geometry processing (needed by sf)
+    libproj-dev \            # For coordinate reference system (CRS) support (needed by sf)
+    libnetcdf-dev \          # For NetCDF support (could be used by sf or other spatial packages)
+    && rm -rf /var/lib/apt/lists/*  # Clean up apt cache to reduce image size
+
+# Install R packages from CRAN using remotes (to avoid installation errors from install2.r)
+RUN R -e "install.packages('remotes')" \
+    && R -e "remotes::install_cran('shiny')" \  # Install shiny package
+    && R -e "remotes::install_cran('dplyr')" \   # Install dplyr package
+    && R -e "remotes::install_cran('sf')" \      # Install sf package (geospatial)
+    && R -e "remotes::install_cran('stringr')" \ # Install stringr package
+    && R -e "remotes::install_cran('leaflet')"   # Install leaflet package (for mapping)
+
+# Copy the application code into the container
 COPY . .
 
+# Set the default command to run the Shiny app on port 7860
 CMD ["R", "--quiet", "-e", "shiny::runApp(host='0.0.0.0', port=7860)"]