Switch to rocker/r2u to speed up dependency installation.

.github/workflows/DropSeq.utilities.r.yml

@@ -20,21 +20,18 @@ permissions:
 
 jobs:
   build:
-    runs-on: macos-latest
-    strategy:
-      matrix:
-        r-version: ['4.1.1']
-
+    runs-on: ubuntu-latest
+    container:
+      image: rocker/r2u:latest
     steps:
       - uses: actions/checkout@v3
-      - name: Set up R ${{ matrix.r-version }}
-        uses: r-lib/actions/setup-r@f57f1301a053485946083d7a45022b278929a78a
-        with:
-          r-version: ${{ matrix.r-version }}
+      - uses: actions/checkout@v3
+      - name: SessionInfo
+        run: R -q -e 'sessionInfo()'
       - name: Install dependencies
         run: |
           setwd("src/R/packages/DropSeq.utilities")
-          install.packages(c("remotes", "rcmdcheck"))
+          install.packages(c("rcmdcheck"))
           remotes::install_deps(dependencies = TRUE)
         shell: Rscript {0}
       - name: Check

src/R/packages/DropSeq.utilities/README.md

@@ -8,18 +8,14 @@ DropSeq.utilities contains trivial functions to support other DropSeq R packages
 
 ## Installation
 
-You can install the development version of DropSeq.utilities from [GitHub](https://github.com/) with:
+The preferred installation method is to go to the latest release in
+[Releases](https://github.com/broadinstitute/Drop-seq/releases) and follow the
+instructions there.
 
-``` r
-# install.packages("devtools")
-devtools::install_github("broadinstitute/Drop-seq", subdir="src/R/packages/DropSeq.utilities")
-```
-
-To install a tagged version v1.2.3:
+It is not recommended to install the latest version of DropSeq.utilities from
+[GitHub](https://github.com/), because it is not necessarily stable, but if you choose to do so:
 
 ``` r
 # install.packages("devtools")
-devtools::install_github("broadinstitute/Drop-seq", subdir="src/R/packages/DropSeq.utilities", ref="v1.2.3")
+devtools::install_github("broadinstitute/Drop-seq", subdir="src/R/packages/DropSeq.utilities")
 ```
-
-