Ensuring that duckdb is installed

Dockerfile

@@ -17,6 +17,7 @@ RUN R -e "remotes::install_version('shiny', version = '1.12.1', repos = 'https:/
 RUN R -e "remotes::install_version('bslib', version = '0.10.0', repos = 'https://cloud.r-project.org')"
 RUN R -e "remotes::install_version('DT', version = '0.34.0', repos = 'https://cloud.r-project.org')"
 RUN R -e "remotes::install_version('dplyr', version = '1.2.0', repos = 'https://cloud.r-project.org')"
+RUN R -e "install.packages('duckdb', repos='https://cloud.r-project.org')"
 RUN R -e "remotes::install_version('RSQLite', version = '2.4.5', repos = 'https://cloud.r-project.org')"
 RUN R -e "remotes::install_version('bsicons', version = '0.1.2', repos = 'https://cloud.r-project.org')"
 
@@ -31,7 +32,8 @@ COPY data/ data/
 
 # Verify critical packages are available
 RUN R -e "stopifnot(requireNamespace('shiny', quietly = TRUE))" \
-    && R -e "stopifnot(requireNamespace('querychat', quietly = TRUE))"
+    && R -e "stopifnot(requireNamespace('querychat', quietly = TRUE))" \
+    && R -e "stopifnot(requireNamespace('duckdb', quietly = TRUE))"
 
 EXPOSE 7860