Make invoking the script work from everywhere

scripts/copy-documentation-for-new-release.sh

@@ -1,32 +1,31 @@
 #!/bin/bash
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+cd "$SCRIPT_DIR/.."
 
 if [[ $# != 1 ]]; then
     echo "Usage: $0 <commitish>"
     exit 1
 fi
 
 RELEASE_VERSION="v$1"
-NEW_VERSION_PATH="docs/_releases/$RELEASE_VERSION"
-LATEST_VERSION_PATH="docs/_releases/latest"
 SOURCE_PATH='docs/release-source/'
 
-if [ -e "$NEW_VERSION_PATH" ]
-    then
-        echo "$NEW_VERSION_PATH already exists, cannot continue"
-        exit 1
-fi
-
-if [ -e "$FILE_PATH" ]
-    then
-        echo "$FILE_PATH already exists, cannot continue"
-        exit 1
-fi
-
-
 function copy_source_to(){
-    local DIR="$@"
+    local VERSION="$1"
+    local DIR="docs/_releases/$VERSION"
     local FILE_PATH="${DIR}.md"
 
+    if [ -e "$DIR" ]; then
+            echo "$DIR already exists, cannot continue"
+            exit 1
+    fi
+
+    if [ -e "$FILE_PATH" ]
+        then
+            echo "$FILE_PATH already exists, cannot continue"
+            exit 1
+    fi
+
     echo "Copy $SOURCE_PATH to $DIR"
 
     mkdir $DIR
@@ -35,15 +34,16 @@ function copy_source_to(){
 
     # replace `release_id: master` with `release_id: $RELEASE_VERSION` in
     # $FILE_PATH
-    sed -i.bak "s/release_id: master/release_id: $RELEASE_VERSION/g" "$FILE_PATH"
+    sed -i.bak "s/release_id: master/release_id: $VERSION/g" "$FILE_PATH"
     rm "$FILE_PATH.bak"
 
     git add "$DIR"
     git add "$FILE_PATH"
 }
 
-copy_source_to "$NEW_VERSION_PATH"
-rm -r "$LATEST_VERSION_PATH"
-copy_source_to "$LATEST_VERSION_PATH"
+copy_source_to "$RELEASE_VERSION"
+rm -r "docs/_releases/latest" \
+    "docs/_releases/latest.md"
+copy_source_to "latest"
 
 git commit -m "Add release documentation for $RELEASE_VERSION"