Update Dockerfile

Dockerfile

@@ -1,20 +1,17 @@
-#FROM openanalytics/r-ver:4.1.3
-FROM rocker/r-base
-
-RUN apt-get update && apt-get install --no-install-recommends -y
+FROM openanalytics/r-ver:4.1.3
 
 # system libraries of general use
-#RUN apt-get update && apt-get install --no-install-recommends -y \
-#    pandoc \
-#    pandoc-citeproc \
-#    libcurl4-gnutls-dev \
-#    libcairo2-dev \
-#    libxt-dev \
-#    libssl-dev \
-#    libssh2-1-dev \
-#    libssl1.1 \
-#    libmpfr-dev \
-#    && rm -rf /var/lib/apt/lists/*
+RUN apt-get update && apt-get install --no-install-recommends -y \
+    pandoc \
+    pandoc-citeproc \
+    libcurl4-gnutls-dev \
+    libcairo2-dev \
+    libxt-dev \
+    libssl-dev \
+    libssh2-1-dev \
+    libssl1.1 \
+    libmpfr-dev \
+    && rm -rf /var/lib/apt/lists/*
 
 # basic shiny functionality
 RUN R -q -e "install.packages(c('shiny', 'rmarkdown'))"