ATLAS-4390: Changed Atlas branch to release-2.2.0-rc1

Signed-off-by: sidmishra <sidmishra@apache.org>
diff --git a/dev-support/atlas-docker/.env b/dev-support/atlas-docker/.env
index 4b8f302..19175c2 100644
--- a/dev-support/atlas-docker/.env
+++ b/dev-support/atlas-docker/.env
@@ -1,7 +1,7 @@
 BUILD_HOST_SRC=true
 SKIPTESTS=true
 GIT_URL=https://github.com/apache/atlas.git
-BRANCH=branch-2.0
+BRANCH=release-2.2.0-rc1
 PROFILE=dist,external-hbase-solr
 
 ATLAS_VERSION=2.2.0