Production Deployment : Blocked request. To allow this host, add `server.allowedHosts` in vite.config.js.

Hi @wch @schloerke @icarusz ## Describe the problem We are building a web application using Rshiny and have reticulate being called (for some Python functions inside R). The docker build file is shared for your reference. The build is working fine perfectly in IP port , however we get error while using private DNS url for that IP Port. Error Information: Blocked request. This host ("stgvfrejectreason.chola.murugappa.com") is not allowed. To allow this host, add "stgvfrejectreason.chola.murugappa.com" to `server.allowedHosts` in vite.config.js. Work arounds - Failed options(bslib.vite = FALSE) Sys.setenv(VITE_ALLOWED_HOSTS = "stgvfrejectreason.chola.murugappa.com") ```r # Use official R base image -- FROM r-base:4.2.3   # -------------------------------------------------- # Install system dependencies # -------------------------------------------------- RUN apt-get update && apt-get install -y \ curl \ gnupg \ unixodbc \ unixodbc-dev \ libcurl4-openssl-dev \ libfontconfig1-dev \ libfreetype6-dev \ libssl-dev \ libxml2-dev \ libpq-dev \ libmariadb-dev \ libsqlite3-dev \ apt-transport-https \ ca-certificates \ lsb-release \ libhiredis-dev \ libsodium-dev \ cmake \ libv8-dev \ wget \ && rm -rf /var/lib/apt/lists/*     # -------------------------------------------------- # Install CRAN packages (your stack + devtools deps) # -------------------------------------------------- RUN R -e "install.packages(c( 'shiny', 'bslib', 'readxl', 'dplyr', 'glue','reticulate', 'jsonlite', 'curl', 'openssl','gemini.R', 'httr', 'httr2', \ 'remotes', 'devtools','future','promises','future.apply'\ ), repos='https://cran.rstudio.com/')"   RUN R -e "install.packages(c('jose'),repos ='https://cran.rstudio.com/')"   RUN R -e "install.packages(c('R.utils','R.oo','R.methodsS3'),repos ='https://cran.rstudio.com/')"   # -------------------------------------------------- # Install specific mongolite version (SOURCE BUILD) # --------------------------------------------------   RUN R -e "remotes::install_version('mongolite', version = '2.3.1', repos='https://cran.rstudio.com/', upgrade = 'never')"     # -------------------------------------------------- # Configure Python environment for reticulate # -------------------------------------------------- # Set Python environment variables ENV RETICULATE_PYTHON=/usr/bin/python3 ENV PYTHONPATH=/usr/local/lib/python3.9/site-packages:/usr/lib/python3/dist-packages     RUN python3 -m pip install --no-cache-dir numpy --break-system-packages RUN python3 -m pip install --no-cache-dir pandas --break-system-packages RUN python3 -m pip install --no-cache-dir clickhouse-connect --break-system-packages     # Verify Python installation RUN python3 -c "import numpy; print('numpy installed successfully')"     # -------------------------------------------------- # Clean up # -------------------------------------------------- RUN apt-get clean && rm -rf /var/lib/apt/lists/*     # -------------------------------------------------- # Configure reticulate in R environment # --------------------------------------------------   RUN R -e "library(reticulate); use_python('/usr/bin/python3', required = TRUE); py_config()"     # -------------------------------------------------- # App setup # --------------------------------------------------   RUN mkdir /vf_rejection   RUN mkdir /vf_rejection/token RUN mkdir /vf_rejection/utl RUN mkdir /vf_rejection/src RUN mkdir /vf_rejection/reference_files RUN mkdir /vf_rejection/folder_output   # Copy all project files COPY . /vf_rejection/ COPY . /vf_rejection/token COPY . /vf_rejection/utl COPY . /vf_rejection/src COPY . /vf_rejection/reference_files   WORKDIR /vf_rejection   # Permissions (optional if already correct) RUN chmod 755 -R /vf_rejection   # Expose plumber API port EXPOSE 8080   # -------------------------------------------------- # Start the main R script # -------------------------------------------------- CMD ["Rscript", "/vf_rejection/app.R"] ``` Thanks Arun