Merge pull request #3159 from Silverpeas/master

Update docker image silverpeas

library/silverpeas

@@ -1,6 +1,6 @@
 Maintainers: Miguel Moquillon <[email protected]> (@mmoqui)
 GitRepo: https://github.com/Silverpeas/docker-silverpeas-prod.git
 
-Tags: 6.0-alpha2, latest
-GitCommit: 77c7c86d82aeee270cf23ef1272cfd95767df3c4
+Tags: 6.0-alpha3, latest
+GitCommit: 48e66a18fb4fa3933a1aafce48be75cc4b18a765