listFiles for bioc branch action

The prior approach to listing the files did not return an array to FILES (line 6). The new approach immediately lists all files in relevant directories for the bioconductor branch. Files are checked out one at a time in a for loop. Adds bin/bash to the start of the script.

.github/copy_to_branch.sh

@@ -1,15 +1,18 @@
-# Designate desired directories and files
-SRC_FOLDER_PATHS=(data-raw man R tests vignettes)
-SRC_FILE_PATHS=(DESCRIPTION LICENSE NAMESPACE NEWS.md README.md inst/CITATION)
-
-# Get files from directories
-FILES=$(find "${SRC_FOLDER_PATHS[@]}" -type f)
+#!/bin/bash
 
-# Add indicated individual files
-for F in "${SRC_FILE_PATHS[@]}"
-do
-FILES+=" ${F}"
-done
+# Designate desired directories and files
+FILES=(
+'data-raw/'*
+'man/'*
+'R/'*
+'tests/'*
+'vignettes/'*
+'DESCRIPTION'
+'NAMESPACE'
+'NEWS.md'
+'README.md'
+'inst/CITATION'
+)
 
 echo "${FILES[@]}"
 
@@ -22,7 +25,9 @@ git fetch
 git checkout $TARGET_BRANCH
 # copy files from the branch the action is being run upon
 SRC_BRANCH=$(git symbolic-ref --short HEAD)
-git checkout $SRC_BRANCH -- $FILES
+for F in ${FILES}; do
+git checkout $SRC_BRANCH -- ${F}
+done
 # Commit to the repository (ignore if no changes)
 git add -A
 git diff-index --quiet HEAD ||  git commit -am "update files"