Use $BASE_BRANCH instead of master (#7)

* Use $BASE_BRANCH instead of master

* Set master as default to $BASE_BRANCH

Author: jaiselrahman

entrypoint.sh

@@ -74,5 +74,5 @@ echo "Deploying to GitHub..." && \
 git add -f $FOLDER && \
 
 git commit -m "Deploying to ${BRANCH} - $(date +"%T")" && \
-git push $REPOSITORY_PATH `git subtree split --prefix $FOLDER master`:$BRANCH --force && \
-echo "Deployment succesful!"
+git push $REPOSITORY_PATH `git subtree split --prefix $FOLDER ${BASE_BRANCH:-master}`:$BRANCH --force && \
+echo "Deployment succesful!"