Added support for jpg files

Dockerfile

@@ -1,4 +1,4 @@
 FROM node:lts-alpine3.9
-RUN apk update && apk upgrade && apk add --no-cache bash git openssh optipng
+RUN apk update && apk upgrade && apk add --no-cache bash git openssh optipng jpegoptim
 COPY entrypoint.sh /entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh

@@ -37,6 +37,7 @@ _git_push() {
 
 # PROGRAM
 find -type f -name "*.png" -exec optipng -nc -nb -o7 {} \;
+find -type f -name "*.jpg" -exec jpegoptim -nc -nb -o7 {} \;
 
 # To keep runtime good, just continue if something was changed
 if _git_changed;