adding Docker setup

Author: osorensen

.Rbuildignore

@@ -6,4 +6,4 @@
 ^\.github$
 ^\.git$
 ^cran-comments\.md$
-
+^Makefile$

Dockerfile

@@ -0,0 +1,16 @@
+# Use the CRAN debian image as the base
+FROM --platform=linux/amd64 ghcr.io/r-devel/rcheckserver/debian:latest
+
+# Set a working directory for the build
+WORKDIR /build
+
+# Copy only the DESCRIPTION file first
+# This ensures R doesn't rebuild this layer unless dependencies change
+COPY DESCRIPTION .
+
+# Install the system requirements and R dependencies
+RUN R -e 'install.packages(c("remotes", "rcmdcheck"), repos="https://cloud.r-project.org")' \
+    && R -e 'remotes::install_deps(dependencies = TRUE)'
+
+# Clean up the build directory
+WORKDIR /workdir

Makefile

@@ -0,0 +1,24 @@
+IMAGE_NAME=bayesmallows-check-env
+PLATFORM=linux/amd64
+VOL=-v "$(shell pwd)":/workdir
+WORKDIR=-w /workdir
+
+.PHONY: build-env check-debian shell clean
+
+# 1. Build the environment (run this when DESCRIPTION changes)
+build-env:
+	docker build --platform $(PLATFORM) -t $(IMAGE_NAME) .
+
+# 2. Run the check (fast, uses cached dependencies)
+check-debian:
+	docker run --rm $(VOL) $(WORKDIR) --platform $(PLATFORM) $(IMAGE_NAME) \
+		bash -c "R CMD build . && R CMD check BayesMallowsSMC2_*.tar.gz"
+
+# 3. Debugging shell
+shell:
+	docker run --rm -it $(VOL) $(WORKDIR) --platform $(PLATFORM) $(IMAGE_NAME) /bin/bash
+
+# 4. Clean up check artifacts
+clean:
+	rm -rf *.Rcheck/
+	rm -f *.tar.gz