Improved README and Code

entrypoint.sh

@@ -1,7 +1,9 @@
 #!/bin/sh
-# e is for exiting the script automatically if a command fails, u is for exiting if a variable is not set, x is for showing the commands before they are executed
-set -eux
+# e is for exiting the script automatically if a command fails, u is for exiting if a variable is not set
+# x would be for showing the commands before they are executed
+set -eu
 
+# FUNCTIONS
 # Function for setting up git env in the docker container (copied from https://github.com/stefanzweifel/git-auto-commit-action/blob/master/entrypoint.sh)
 _git_setup ( ) {
     cat <<- EOF > $HOME/.netrc
@@ -18,10 +20,12 @@ EOF
     git config --global user.name "GitHub Action"
 }
 
+# Checks if any files are changed
 _git_changed() {
     [[ -n "$(git status -s)" ]]
 }
 
+# Pushes to the according upstream (origin or input branch)
 _git_push() {
     if [ -z "$INPUT_BRANCH" ]
     then
@@ -31,21 +35,23 @@ _git_push() {
     fi
 }
 
+# PROGRAM
 echo "Installing prettier..."
 npm install --silent --global prettier
 
 echo "Prettifing files..."
-prettier $INPUT_PRETTIER_OPTIONS || echo "Problem while prettifying your files!"
+prettier $INPUT_PRETTIER_OPTIONS || echo "Problem while prettifying your files with options $INPUT_PRETTIER_OPTIONS"
 
+# To keep runtime good, just continue if something was changed
 if _git_changed;
 then
   # Calling method to configure the git environemnt
   _git_setup
   echo "Commiting and pushing changes..."
   # Switch to the actual branch
-  git checkout $INPUT_BRANCH
+  git checkout $INPUT_BRANCH || echo "Problem checking out the specified branch: $INPUT_BRANCH"
   # Add changes to git
-  git add "${INPUT_FILE_PATTERN}"
+  git add "${INPUT_FILE_PATTERN}" || echo "Problem adding your files with pattern ${INPUT_FILE_PATTERN}"
   # Commit and push changes back
   git commit -m "$INPUT_COMMIT_MESSAGE" --author="$GITHUB_ACTOR <$GITHUB_ACTOR@users.noreply.github.com>" ${INPUT_COMMIT_OPTIONS:+"$INPUT_COMMIT_OPTIONS"}
   _git_push