Add Ubuntu 20 support

builder/Dockerfile.ubuntu-2004

@@ -0,0 +1,23 @@
+FROM ubuntu:focal
+
+ENV OS_IDENTIFIER ubuntu-2004
+
+RUN set -x \
+  && sed -i "s|# deb-src|deb-src|g" /etc/apt/sources.list \
+  && export DEBIAN_FRONTEND=noninteractive \
+  && apt-get update \
+  && apt-get install -y libcurl4-openssl-dev libicu-dev libopenblas-base wget python3-pip ruby ruby-dev \
+  && apt-get build-dep -y r-base
+
+RUN pip3 install awscli
+
+RUN gem install fpm
+
+RUN chmod 0777 /opt
+
+# Override the default pager used by R
+ENV PAGER /usr/bin/pager
+
+COPY package.ubuntu-2004 /package.sh
+COPY build.sh .
+ENTRYPOINT ./build.sh

builder/docker-compose.yml

@@ -23,6 +23,17 @@ services:
     image: r-builds:ubuntu-1804
     volumes:
       - ./integration/tmp:/tmp/output
+  ubuntu-2004:
+    command: ./build.sh
+    environment:
+      - R_VERSION=${R_VERSION}
+      - LOCAL_STORE=/tmp/output
+    build:
+      context: .
+      dockerfile: Dockerfile.ubuntu-2004
+    image: r-builds:ubuntu-2004
+    volumes:
+      - ./integration/tmp:/tmp/output
   debian-9:
     command: ./build.sh
     environment:

builder/package.ubuntu-2004

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+if [[ ! -d /tmp/output/ubuntu-2004 ]]; then
+  mkdir -p /tmp/output/ubuntu-2004
+fi
+
+fpm \
+  -s dir \
+  -t deb \
+  -v 1 \
+  -n R-${R_VERSION} \
+  --vendor "RStudio Inc." \
+  --deb-priority "optional" \
+  --deb-field 'Bugs: https://github.com/rstudio/r-builds/issues' \
+  --url "http://www.r-project.org/" \
+  --description "GNU R statistical computation and graphics system" \
+  --maintainer "RStudio Inc https://github.com/rstudio/r-builds" \
+  --license "GPL-2" \
+  -p /tmp/output/ubuntu-2004/ \
+  -d g++ \
+  -d gcc \
+  -d gfortran \
+  -d libbz2-1.0 \
+  -d libc6 \
+  -d libcairo2 \
+  -d libcurl4 \
+  -d libglib2.0-0 \
+  -d libgomp1 \
+  -d libicu66 \
+  -d libjpeg8 \
+  -d liblzma5 \
+  -d libopenblas-dev \
+  -d libpango-1.0-0 \
+  -d libpangocairo-1.0-0 \
+  -d libpaper-utils \
+  -d libpcre3 \
+  -d libpng16-16 \
+  -d libreadline8 \
+  -d libtcl8.6 \
+  -d libtiff5 \
+  -d libtk8.6 \
+  -d libx11-6 \
+  -d libxt6 \
+  -d make \
+  -d ucf \
+  -d unzip \
+  -d zip \
+  -d zlib1g \
+  /opt/R/${R_VERSION}
+
+shopt -s extglob
+export PKG_FILE=$(ls /tmp/output/ubuntu-2004/[rR]-${R_VERSION}*.@(deb|rpm) | head -1)
+