Update Dockerfile

Dockerfile

@@ -1,40 +1,27 @@
-FROM rocker/r-base:latest
+FROM rocker/shiny:latest
 
-# System deps for R pkgs + headless Chromium (for webshot2 PNG export)
+WORKDIR /code
+
+# Minimal system deps for headless Chromium (webshot2) + TLS
 RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y --no-install-recommends \
-    libcurl4-openssl-dev \
-    libssl-dev \
-    libxml2-dev \
-    libfontconfig1-dev \
-    libfreetype6-dev \
-    libxrender1 \
-    libxext6 \
+    chromium \
     libnss3 \
-    libglib2.0-0 \
+    libgbm1 \
     libx11-6 \
-    libx11-xcb1 \
-    libxcb1 \
-    libxcomposite1 \
-    libxdamage1 \
-    libxfixes3 \
-    libatk-bridge2.0-0 \
+    libxrender1 \
+    libxext6 \
     libgtk-3-0 \
-    libdrm2 \
-    libgbm1 \
     fonts-liberation \
     fonts-dejavu \
-    chromium \
     ca-certificates \
  && rm -rf /var/lib/apt/lists/*
 
-# Let chromote/webshot2 find Chromium and use safe flags in containers
+# Let webshot2/chromote find Chromium and use safe flags in containers
 ENV CHROME_BIN=/usr/bin/chromium
 ENV CHROMOTE_CHROME=/usr/bin/chromium
 ENV CHROMOTE_CHROME_ARGS="--no-sandbox --disable-dev-shm-usage"
 
-WORKDIR /app
-
-# R packages
+# R packages used by this app
 RUN install2.r --error --skipinstalled \
     shiny \
     shinydashboard \
@@ -47,9 +34,10 @@ RUN install2.r --error --skipinstalled \
     ggplot2
 
 # App code
-COPY . /app
+COPY . /code
 
+# Serve on 7860 to match your runApp call
 EXPOSE 7860
 
-# Run the Shiny app (uses $PORT if provided)
-CMD ["R", "--quiet", "-e", "options(shiny.port=as.integer(Sys.getenv('PORT', 7860)), shiny.host='0.0.0.0'); shiny::runApp('/app')"]
+# Run app (respects $PORT if set by the platform)
+CMD ["R", "--quiet", "-e", "options(shiny.port=as.integer(Sys.getenv('PORT', 7860)), shiny.host='0.0.0.0'); shiny::runApp('/code')"]