initial commit (carried over from rocker-org/rocker/r-ubuntu)

.github/workflows/docker.yaml

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+name: docker
+
+on:
+  push:
+  schedule:
+  - cron: "22 3 25 * *"
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    name: ${{ matrix.tag }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        config:
+          - { directory: bionic,  tag: '18.04' }
+          - { directory: focal,   tag: '20.04' }
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    #- name: Set up QEMU
+    #  uses: docker/setup-qemu-action@v1
+
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v1
+
+    - name: Login to DockerHub
+      uses: docker/login-action@v1
+      with:
+        username: ${{ secrets.DOCKER_USERNAME }}
+        password: ${{ secrets.DOCKER_PASSWORD }}
+
+    - name: Build and push
+      uses: docker/build-push-action@v2
+      with:
+        context: ${{ matrix.config.directory }}
+        tags: rocker/r-ubuntu:${{ matrix.config.tag }}

README.md

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+
+r-ubuntu -- 'r-base' for Ubuntu LTS
+===================================
+
+This Dockerfile is close to the ['r-base'](https://github.com/rocker-org/rocker/tree/master/r-base) container
+for Rocker -- which is the same container as the official ['r-base'](https://hub.docker.com/_/r-base) container for R -- but based on
+Ubuntu LTS.  And while 'r-base' uses Debian testing, this container is based on
+the LTS release and connects to the [PPA by Michael Rutter](https://launchpad.net/~marutter/+archive/ubuntu/c2d4u3.5) with over
+4,000 r-cran-* packages.
+
+To install, use the explicit LTS tag---currently 18.04---when pulling
+
+```
+docker pull r-ubuntu:18.04
+```
+
+as we do not want to use latest (which may suggest an interim Ubuntu release
+between the bi-annual LTS schedule).
+
+As always, this is work in progress -- please come and talk to @eddelbuettel and
+@cboettig (via GitHub issue tickets) about how to get involved.
+
+Documentation is being added at the [Wiki](https://github.com/rocker-org/rocker/wiki).

bionic/Dockerfile

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+## Emacs, make this -*- mode: sh; -*-
+
+FROM ubuntu:bionic
+
+LABEL org.label-schema.license="GPL-2.0" \
+      org.label-schema.vcs-url="https://github.com/rocker-org/r-ubuntu" \
+      org.label-schema.vendor="Rocker Project" \
+      maintainer="Dirk Eddelbuettel <[email protected]>"
+
+## Set a default user. Available via runtime flag `--user docker` 
+## Add user to 'staff' group, granting them write privileges to /usr/local/lib/R/site.library
+## User should also have & own a home directory (for rstudio or linked volumes to work properly). 
+RUN useradd docker \
+	&& mkdir /home/docker \
+	&& chown docker:docker /home/docker \
+	&& addgroup docker staff
+
+RUN apt-get update \
+	&& apt-get install -y --no-install-recommends \
+		software-properties-common \
+                dirmngr \
+                ed \
+		less \
+		locales \
+		vim-tiny \
+		wget \
+		ca-certificates \
+        && add-apt-repository --enable-source --yes "ppa:marutter/rrutter4.0" \
+        && add-apt-repository --enable-source --yes "ppa:c2d4u.team/c2d4u4.0+"
+
+## Configure default locale, see https://github.com/rocker-org/rocker/issues/19
+RUN echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen \
+	&& locale-gen en_US.utf8 \
+	&& /usr/sbin/update-locale LANG=en_US.UTF-8
+
+ENV LC_ALL en_US.UTF-8
+ENV LANG en_US.UTF-8
+
+## This was not needed before but we need it now
+ENV DEBIAN_FRONTEND noninteractive
+
+## Otherwise timedatectl will get called which leads to 'no systemd' inside Docker
+ENV TZ UTC
+
+# Now install R and littler, and create a link for littler in /usr/local/bin
+# Default CRAN repo is now set by R itself, and littler knows about it too
+# r-cran-docopt is not currently in c2d4u so we install from source
+RUN apt-get update \
+        && apt-get install -y --no-install-recommends \
+                 littler \
+ 		 r-base \
+ 		 r-base-dev \
+ 		 r-recommended \
+  	&& ln -s /usr/lib/R/site-library/littler/examples/install.r /usr/local/bin/install.r \
+ 	&& ln -s /usr/lib/R/site-library/littler/examples/install2.r /usr/local/bin/install2.r \
+ 	&& ln -s /usr/lib/R/site-library/littler/examples/installGithub.r /usr/local/bin/installGithub.r \
+ 	&& ln -s /usr/lib/R/site-library/littler/examples/testInstalled.r /usr/local/bin/testInstalled.r \
+ 	&& install.r docopt \
+ 	&& rm -rf /tmp/downloaded_packages/ /tmp/*.rds \
+ 	&& rm -rf /var/lib/apt/lists/*
+
+CMD ["bash"]

focal/Dockerfile

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+## Emacs, make this -*- mode: sh; -*-
+
+FROM ubuntu:focal
+
+LABEL org.label-schema.license="GPL-2.0" \
+      org.label-schema.vcs-url="https://github.com/rocker-org/r-ubuntu" \
+      org.label-schema.vendor="Rocker Project" \
+      maintainer="Dirk Eddelbuettel <[email protected]>"
+
+## Set a default user. Available via runtime flag `--user docker` 
+## Add user to 'staff' group, granting them write privileges to /usr/local/lib/R/site.library
+## User should also have & own a home directory (for rstudio or linked volumes to work properly). 
+RUN useradd docker \
+	&& mkdir /home/docker \
+	&& chown docker:docker /home/docker \
+	&& addgroup docker staff
+
+RUN apt-get update \
+	&& apt-get install -y --no-install-recommends \
+		software-properties-common \
+                dirmngr \
+                ed \
+		less \
+		locales \
+		vim-tiny \
+		wget \
+		ca-certificates \
+        && add-apt-repository --enable-source --yes "ppa:marutter/rrutter4.0" \
+        && add-apt-repository --enable-source --yes "ppa:c2d4u.team/c2d4u4.0+"
+
+## Configure default locale, see https://github.com/rocker-org/rocker/issues/19
+RUN echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen \
+	&& locale-gen en_US.utf8 \
+	&& /usr/sbin/update-locale LANG=en_US.UTF-8
+
+ENV LC_ALL en_US.UTF-8
+ENV LANG en_US.UTF-8
+
+## This was not needed before but we need it now
+ENV DEBIAN_FRONTEND noninteractive
+
+## Otherwise timedatectl will get called which leads to 'no systemd' inside Docker
+ENV TZ UTC
+
+# Now install R and littler, and create a link for littler in /usr/local/bin
+# Default CRAN repo is now set by R itself, and littler knows about it too
+# r-cran-docopt is not currently in c2d4u so we install from source
+RUN apt-get update \
+        && apt-get install -y --no-install-recommends \
+                 littler \
+ 		 r-base \
+ 		 r-base-dev \
+ 		 r-recommended \
+  	&& ln -s /usr/lib/R/site-library/littler/examples/install.r /usr/local/bin/install.r \
+ 	&& ln -s /usr/lib/R/site-library/littler/examples/install2.r /usr/local/bin/install2.r \
+ 	&& ln -s /usr/lib/R/site-library/littler/examples/installGithub.r /usr/local/bin/installGithub.r \
+ 	&& ln -s /usr/lib/R/site-library/littler/examples/testInstalled.r /usr/local/bin/testInstalled.r \
+ 	&& install.r docopt \
+ 	&& rm -rf /tmp/downloaded_packages/ /tmp/*.rds \
+ 	&& rm -rf /var/lib/apt/lists/*
+
+CMD ["bash"]