diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..7735350
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,11 @@
+# Changes to the oeplatform postgresql docker image
+
+## Changes
+
+    - Crete all extensions for bot oep_django and oedb databases & add new extensions to find similar entires [#1](https://github.com/OpenEnergyPlatform/oeplatform-postgres/pull/1)
+
+## Features
+
+## Bugs
+
+## Documentation updates
diff --git a/init.sh b/init.sh
index f3b01b0..5666214 100644
--- a/init.sh
+++ b/init.sh
@@ -5,6 +5,12 @@ echo "Creating Databases..."
 createdb oep_django
 createdb oedb
 
-psql -U postgres -d oedb -c "create extension postgis;"
-psql -U postgres -d oedb -c "create extension postgis_topology;"
-psql -U postgres -d oedb -c "create extension hstore;"
\ No newline at end of file
+psql -U postgres -d oedb -c "CREATE EXTENSION IF NOT EXISTS postgis;"
+psql -U postgres -d oedb -c "CREATE EXTENSION IF NOT EXISTS postgis_topology;"
+psql -U postgres -d oedb -c " CREATE EXTENSION IF NOT EXISTS hstore;"
+psql -U postgres -d oedb -c "CREATE EXTENSION IF NOT EXISTS pg_trgm;"
+
+psql -U postgres -d oep_django -c "CREATE EXTENSION IF NOT EXISTS postgis;"
+psql -U postgres -d oep_django -c "CREATE EXTENSION IF NOT EXISTS postgis_topology;"
+psql -U postgres -d oep_django -c " CREATE EXTENSION IF NOT EXISTS hstore;"
+psql -U postgres -d oep_django -c "CREATE EXTENSION IF NOT EXISTS pg_trgm;"