fix: return code from yamlfixer new version

Refs: #10 #12

Dockerfile

@@ -1,5 +1,5 @@
 # Container image that runs your code
-FROM optnc/yamlfixer:0.3.9
+FROM optnc/yamlfixer:0.4.7
 
 # Copies your code file from your action repository to the filesystem path `/` of the container
 COPY entrypoint.sh /entrypoint.sh
@@ -9,6 +9,7 @@ RUN chmod +x /entrypoint.sh
 RUN apk update
 RUN apk add git
 RUN apk add curl
+RUN apk add jq
 
 # Code file to execute when the docker container starts up (`entrypoint.sh`)
 ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh

@@ -1,9 +1,9 @@
 #!/bin/sh -l
 
-yamlfixer $OPTIONS /github/workspace/$YAML_FILE
+CHANGES=$(yamlfixer --nochange --jsonsummary /github/workspace/$YAML_FILE 2>&1 | jq '[.fixed,.modified] | add')
 
-result=$?
-if [ $result -ne 0 ] ; then
+if [ $CHANGES -gt 0 ] ; then
+  yamlfixer $OPTIONS /github/workspace/$YAML_FILE
   echo "WARN: all input files didn't pass successfully yamllint strict mode." ;
   echo "INFO : create a new branch with corrections." ;
   cd /github/workspace