add devtools

Author: ch99l

containers/r/Dockerfile

@@ -6,5 +6,5 @@ RUN apt-get update && apt-get install -y \
 	  procps && rm -rf /var/lib/apt/lists/*
 
 # install Seurat Object (v5.3.0), Seurat (v5.4.0), and Bambu
-RUN R -e "install.packages(c('pak', 'BiocManager'), repos='https://cloud.r-project.org')"
+RUN R -e "install.packages(c('pak', 'devtools', 'BiocManager'), repos='https://cloud.r-project.org')"
 RUN R -e "pak::pkg_install(c('SeuratObject@5.3.0', 'Seurat@5.4.0', 'GoekeLab/bambu@devel_pre_v4'))"