diff --git a/development/vscode/Dockerfile b/development/vscode/Dockerfile
index 60b8a98..39f1d65 100644
--- a/development/vscode/Dockerfile
+++ b/development/vscode/Dockerfile
@@ -26,6 +26,12 @@ COPY  --from=rstudio /rocker_scripts/setup_R.sh /rocker_scripts/setup_R.sh
 RUN /rocker_scripts/install_R_source.sh
 #RUN /rocker_scripts/setup_R.sh
 
+## Add a default CRAN mirror
+echo "options(repos = c(CRAN = '${CRAN}'), download.file.method = 'libcurl')" >>"${R_HOME}/etc/Rprofile.site"
+cat <<EOF >>"${R_HOME}/etc/Rprofile.site"
+options(HTTPUserAgent = sprintf("R/%s R (%s)", getRversion(), paste(getRversion(), R.version["platform"], R.version["arch"], R.version["os"])))
+EOF
+
 RUN /rocker_scripts/install_rstudio.sh
 RUN /rocker_scripts/install_pandoc.sh
 RUN /rocker_scripts/install_quarto.sh