Tweak example configs

docker-compose.override.yml.example

@@ -0,0 +1,11 @@
+# See https://docs.docker.com/compose/multiple-compose-files/merge/ for how
+# exactly these overrides get applied to the main file.
+# tl;dr: strings and numbers get overwritten, lists get concatenated
+services:
+  record-indexer:
+    environment:
+      INDEXER_WORKERS: 15
+  consumer:
+    environment:
+      CONSUMER_RELAYS: "https://bsky.network"
+

example.env

@@ -1,3 +1,3 @@
 POSTGRES_PASSWORD='some password'
-DATA_DIR=/path/to/storage/dir
+DATA_DIR=
-CSV_DIR=/path/to/csv/export/dir
+CSV_DIR=