add docker + vscode support

.Rbuildignore

@@ -11,3 +11,4 @@
 ^doc$
 ^Meta$
 ^_pkgdown\.yml$
+^\.devcontainer$

.devcontainer/Dockerfile

@@ -0,0 +1,50 @@
+# R version: 4, 4.1, 4.0
+ARG VARIANT="4"
+FROM rocker/r-ver:${VARIANT}
+
+# Use the [Option] comment to specify true/false arguments that should appear in VS Code UX
+#
+# [Option] Install zsh
+ARG INSTALL_ZSH="true"
+# [Option] Upgrade OS packages to their latest versions
+ARG UPGRADE_PACKAGES="false"
+
+# Install needed packages and setup non-root user. Use a separate RUN statement to add your own dependencies.
+ARG USERNAME=vscode
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+COPY .devcontainer/library-scripts/*.sh /tmp/library-scripts/
+RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
+    && /bin/bash /tmp/library-scripts/common-debian.sh "${INSTALL_ZSH}" "${USERNAME}" "${USER_UID}" "${USER_GID}" "${UPGRADE_PACKAGES}" "true" "true" \
+    && usermod -a -G staff ${USERNAME} \
+    && apt-get -y install \
+        python3-pip \
+        libgit2-dev \
+        libcurl4-openssl-dev \
+        libssl-dev \
+        libxml2-dev \
+        libxt-dev \
+    && apt-get autoremove -y && apt-get clean -y && rm -rf /var/lib/apt/lists/* /tmp/library-scripts \
+    && python3 -m pip --no-cache-dir install radian \
+    && install2.r --error --skipinstalled --ncpus -1 \
+        devtools \
+        languageserver \
+        httpgd \
+    && rm -rf /tmp/downloaded_packages
+
+# VSCode R Debugger dependency. Install the latest release version from GitHub without using GitHub API.
+# See https://github.com/microsoft/vscode-dev-containers/issues/1032
+RUN export TAG=$(git ls-remote --tags --refs --sort='version:refname' https://github.com/ManuelHentschel/vscDebugger v\* | tail -n 1 | cut --delimiter='/' --fields=3) \
+    && Rscript -e "remotes::install_git('https://github.com/ManuelHentschel/vscDebugger.git', ref = '"${TAG}"', dependencies = FALSE)"
+
+RUN apt-get update \
+     && export DEBIAN_FRONTEND=noninteractive \
+     && apt-get -y install --no-install-recommends libglpk-dev libv8-dev \
+            pandoc-citeproc libpng-dev
+
+# install vscode dev deps
+RUN Rscript -e 'devtools::install_github("mdlincoln/docthis")'
+
+# install dependencies
+COPY DESCRIPTION /tmp/package/DESCRIPTION
+RUN Rscript -e "devtools::install_deps('/tmp/package', dependencies = TRUE)"

.devcontainer/devcontainer.json

@@ -0,0 +1,35 @@
+// For format details, see https://aka.ms/devcontainer.json. For config options, see the README at:
+// https://github.com/microsoft/vscode-dev-containers/tree/v0.209.6/containers/r
+{
+	"name": "scoringutils",
+	"image": "ghcr.io/epiforecasts/scoringutils:master",
+
+	// Set *default* container specific settings.json values on container create.
+	"settings": {
+		"r.rterm.linux": "/usr/local/bin/radian",
+		"r.bracketedPaste": true,
+		"r.plot.useHttpgd": true,
+		"[r]": {
+			"editor.wordSeparators": "`~!@#%$^&*()-=+[{]}\\|;:'\",<>/?"
+		}
+	},
+
+	// Add the IDs of extensions you want installed when the container is created.
+	"extensions": [
+		"ikuyadeu.r",
+		"tomoki1207.pdf",
+		"github.vscode-pull-request-github",
+		"formulahendry.code-runner",
+		"mutantdino.resourcemonitor",
+		"searking.preview-vscode"
+	],
+
+	// Use 'forwardPorts' to make a list of ports inside the container available locally.
+	// "forwardPorts": [],
+
+	// Use 'postCreateCommand' to run commands after the container is created.
+	// "postCreateCommand": "R --version",
+
+	// Comment out connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
+	"remoteUser": "vscode"
+}