Update Dockerfile

Dockerfile

@@ -1,23 +1,26 @@
-FROM rocker/r-ver:4.3.2
-
-# Install system dependencies
-RUN apt-get update && apt-get install -y \
-libcurl4-openssl-dev \
-libssl-dev \
-libxml2-dev \
-&& rm -rf /var/lib/apt/lists/*
-  
-  # Install R packages
-  RUN R -e "install.packages('plumber', repos='https://cloud.r-project.org/')"
-
-# Set working directory
-WORKDIR /app
-
-# Copy application files
-COPY app.R /app/
-  
-  # Expose port (Hugging Face uses 7860)
-  EXPOSE 7860
-
-# Start the API
+FROM rocker/r-ver:4.3.2
+
+# Install system dependencies
+RUN apt-get update && apt-get install -y \
+    libcurl4-openssl-dev \
+    libssl-dev \
+    libxml2-dev \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install R packages with explicit CRAN mirror
+RUN R -e "options(repos = c(CRAN = 'https://cloud.r-project.org')); install.packages('plumber')"
+
+# Verify installation
+RUN R -e "library(plumber); cat('Plumber version:', as.character(packageVersion('plumber')), '\n')"
+
+# Set working directory
+WORKDIR /app
+
+# Copy application files
+COPY app.R /app/
+
+# Expose port (Hugging Face uses 7860)
+EXPOSE 7860
+
+# Start the API
 CMD ["R", "-e", "pr <- plumber::plumb('app.R'); pr$run(host='0.0.0.0', port=7860)"]