fix image name in demo compose

docker-compose.yml

@@ -3,9 +3,9 @@ version: '2'
 services:
     remark:
         build: .
-        image: umputun/remark:master
+        image: umputun/remark42:master
         container_name: "remark42"
-        hostname: "remark"
+        hostname: "remark42"
         restart: always
 
         logging:
@@ -19,7 +19,6 @@ services:
         #  - "80:8080"
 
         environment:
-            # - REMARK_URL=https://demo.remark42.com
             - USER
             - REMARK_URL
             - BOLTDB_PATH=/srv/var/db
@@ -27,14 +26,14 @@ services:
             - SESSION_STORE=/srv/var/session
             # - DEV_PASSWD=password # development mode, be careful!
             - DEBUG=true
-            - REMARK_GOOGLE_CID
-            - REMARK_GOOGLE_CSEC
-            - REMARK_GITHUB_CID
-            - REMARK_GITHUB_CSEC
-            - REMARK_FACEBOOK_CID
-            - REMARK_FACEBOOK_CSEC
-            - REMARK_DISQUS_CID
-            - REMARK_DISQUS_CSEC
+            - AUTH_GOOGLE_CID
+            - AUTH_GOOGLE_CSEC
+            - AUTH_GITHUB_CID
+            - AUTH_GITHUB_CSEC
+            - AUTH_FACEBOOK_CID
+            - AUTH_FACEBOOK_CSEC
+            - AUTH_DISQUS_CID
+            - AUTH_DISQUS_CSEC
         volumes:
             - ./var:/srv/var
             #- ./web:/srv/web # uncomment to map web directory directly. It will propagate local changes to container without redeploy