Install pak for all R versions

They use separate libraries, so they need separate
pak installations.

r-debug-1/Dockerfile

@@ -5,4 +5,5 @@ FROM wch1/r-devel
 
 # RDvalgrind: Install R-devel with valgrind level 2 instrumentation
 RUN /tmp/buildR.sh valgrind
+RUN RDvalgrind -q -e 'install.packages("pak", repos = "https://r-lib.github.io/p/pak/dev")'
 RUN RDvalgrind -q -e 'pak::pkg_install(c("devtools", "Rcpp", "roxygen2", "testthat", "memoise", "rmarkdown"))'

r-debug-2/Dockerfile

@@ -4,4 +4,5 @@
 FROM wch1/r-debug-1
 
 RUN /tmp/buildR.sh san
+RUN RDsan -q -e 'install.packages("pak", repos = "https://r-lib.github.io/p/pak/dev")'
 RUN RDsan -q -e 'pak::pkg_install(c("devtools", "Rcpp", "roxygen2", "testthat", "memoise", "rmarkdown"))'

r-debug-3/Dockerfile

@@ -12,5 +12,5 @@ RUN sed -i 's/^#!\/bin\/bash/#!\/bin\/bash\nulimit -Ss 131072/' /usr/local/bin/R
 # Increase stack size in .bashrc, so that it is picked up by RDscriptcsan.
 RUN echo "\nulimit -Ss 131072" >> $HOME/.bashrc
 
-
+RUN RDcsan -q -e 'install.packages("pak", repos = "https://r-lib.github.io/p/pak/dev")'
 RUN RDcsan -q -e 'pak::pkg_install(c("devtools", "Rcpp", "roxygen2", "testthat", "memoise", "rmarkdown"))'

r-debug-4/Dockerfile

@@ -5,4 +5,5 @@ FROM wch1/r-debug-3
 
 # RDstrictbarrier: Make sure that R objects are protected properly.
 RUN /tmp/buildR.sh strictbarrier
+RUN RDstrictbarrier -q -e 'install.packages("pak", repos = "https://r-lib.github.io/p/pak/dev")'
 RUN RDstrictbarrier -q -e 'pak::pkg_install(c("devtools", "Rcpp", "roxygen2", "testthat", "memoise", "rmarkdown"))'

r-debug/Dockerfile

@@ -6,4 +6,5 @@ FROM wch1/r-debug-4
 # RDthreadcheck: Make sure that R's memory management functions are called
 # only from the main R thread.
 RUN /tmp/buildR.sh threadcheck
+RUN RDthreadcheck -q -e 'install.packages("pak", repos = "https://r-lib.github.io/p/pak/dev")'
 RUN RDthreadcheck -q -e 'pak::pkg_install(c("devtools", "Rcpp", "roxygen2", "testthat", "memoise", "rmarkdown"))'