Build R API document. (#6)

.github/workflows/containers.yml

@@ -45,6 +45,7 @@ jobs:
         container_id:
           - xgb-ci.clang_tidy
           - xgb-ci.cpu
+          - xgb-ci.cpu_build_r_doc
           - xgb-ci.gpu
           - xgb-ci.gpu_build_r_rockylinux8
           - xgb-ci.gpu_build_rockylinux8

containers/ci_container.yml

@@ -27,6 +27,9 @@ xgb-ci.gpu_build_r_rockylinux8:
     CUDA_VERSION: "12.4.1"
     R_VERSION: "4.3.2"
 
+xgb-ci.cpu_build_r_doc:
+  container_def: cpu_build_r_doc
+
 xgb-ci.gpu:
   container_def: gpu
   build_args:

containers/dockerfile/Dockerfile.cpu_build_r_doc

@@ -0,0 +1,46 @@
+FROM ubuntu:22.04
+
+SHELL ["/bin/bash", "-c"]
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Install all basic requirements
+RUN \
+    apt-get update && \
+    apt install --no-install-recommends software-properties-common dirmngr wget -y && \
+    wget -qO- https://cloud.r-project.org/bin/linux/ubuntu/marutter_pubkey.asc | tee -a /etc/apt/trusted.gpg.d/cran_ubuntu_key.asc && \
+    add-apt-repository "deb https://cloud.r-project.org/bin/linux/ubuntu $(lsb_release -cs)-cran40/" && \
+    apt-get update && \
+    apt-get install -y --no-install-recommends r-base
+
+RUN \
+    apt-get install \
+        make cmake g++ gcc \
+        libssl-dev libfreetype6-dev libpng-dev libtiff5-dev \
+        libjpeg-dev  libxml2-dev  libcurl4-openssl-dev libharfbuzz-dev \
+        libfribidi-dev libfontconfig1-dev libfontconfig1-dev libv8-dev \
+        pandoc gfortran libblas-dev liblapack-dev librsvg2-dev -y
+
+ENV GOSU_VERSION=1.10
+
+# Install lightweight sudo (not bound to TTY)
+RUN set -ex; \
+    wget -nv -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-amd64" && \
+    chmod +x /usr/local/bin/gosu && \
+    gosu nobody true
+
+# Default entry-point to use if running locally
+# It will preserve attributes of created files
+COPY entrypoint.sh /scripts/
+
+WORKDIR /workspace
+
+RUN mkdir /tmp/rtmpdir
+
+ENV R_LIBS_USER=/tmp/rtmpdir
+ENV DOWNLOAD_STATIC_LIBV8=0
+
+RUN \
+    MAKEFLAGS=-j$(nproc) Rscript -e "install.packages(c('pkgdown', 'knitr'), repos = 'https://mirror.las.iastate.edu/CRAN/', Ncpus = parallel::detectCores())"
+
+ENTRYPOINT ["/scripts/entrypoint.sh"]