Add root-spec to official Dockerfile

* Delete unused config file

docker/Dockerfile

@@ -37,7 +37,8 @@ ENV PGRST_DB_URI= \
     PGRST_JWT_AUD= \
     PGRST_MAX_ROWS= \
     PGRST_PRE_REQUEST= \
-    PGRST_ROLE_CLAIM_KEY=".role"
+    PGRST_ROLE_CLAIM_KEY=".role" \
+    PGRST_ROOT_SPEC=
 
 RUN groupadd -g 1000 postgrest && \
     useradd -r -u 1000 -g postgrest postgrest && \

docker/config.conf

@@ -1,3 +0,0 @@
-db-uri = "postgres://app_user:password@postgres:5432/app_db"
-db-schema = "public"
-db-anon-role = "app_user"

docker/postgrest.conf

@@ -15,3 +15,4 @@ role-claim-key = "$(PGRST_ROLE_CLAIM_KEY)"
 
 max-rows = "$(PGRST_MAX_ROWS)"
 pre-request = "$(PGRST_PRE_REQUEST)"
+root-spec = "$(PGRST_ROOT_SPEC)"