try adjusting dockerfile syntax slightly

action.yml

@@ -255,7 +255,7 @@ runs:
         GITHUB_TOKEN: ${{ inputs.GITHUB_TOKEN }}
       run: |
         options(crayon.enabled = TRUE)
-        ## Devel version of remotes required to due bugs in current CRAN release
+        ## Use devel version of remotes required to due bugs in current CRAN release
         remotes::install_github("r-lib/remotes", upgrade = TRUE)
         if(!require("rworkflows", quietly=TRUE)) remotes::install_github("neurogenomics/rworkflows@dev", upgrade=TRUE)
       shell: Rscript {0}

inst/templates/Dockerfile

@@ -12,14 +12,14 @@ RUN mkdir -p /$PKG
 ADD . /$PKG
 WORKDIR /$PKG
 #### --Step 3--: Install rworkflows ####
-RUN Rscript -e 'if(!require("remotes")) install.packages("remotes"); \
+RUN Rscript -e 'if(!require("remotes")) install.packages("remotes"); \ 
                 if(!require("rworkflows")) remotes::install_github("neurogenomics/rworkflows@dev");'
 #### --Step 4--: Install system dependencies ####
-RUN sysreqs=$(Rscript -e 'rworkflows::dependencies_linux()') \
+RUN sysreqs=$(Rscript -e 'rworkflows::dependencies_linux()') \ 
     sudo -s eval "$sysreqs"
 #### --Step 5--:Install package dependencies ####
-RUN Rscript -e 'options(download.file.method="libcurl", crayon.enabled=TRUE, timeout={TIMEOUT}); \
+RUN Rscript -e 'options(download.file.method="libcurl", crayon.enabled=TRUE, timeout={TIMEOUT}); \ 
                 if(!require("BiocManager",quietly=TRUE)) install.packages("BiocManager"); \ 
-                repos <- BiocManager::repositories(); \
-                remotes::install_local(repos=repos, dependencies=TRUE, build_vignettes=FALSE, upgrade=TRUE, force=TRUE);'
+                repos <- BiocManager::repositories(); \ 
+                remotes::install_local(repos=repos, dependencies=TRUE, build_vignettes=FALSE, upgrade=TRUE, force=TRUE);' 
 RUN rm -rf /$PKG