Update docker-compose.yml and move it to the root to make it more discoverable.

deploy/docker-compose.yml

@@ -1,15 +0,0 @@
-services:
-
-  trail:
-    image: docker.io/trailbase/trailbase:latest
-    # build: .
-    ports:
-      - "${PORT:-4000}:4000"
-    restart: unless-stopped
-    volumes:
-      - ${DATA_DIR:-.}/traildepot:/app/traildepot
-    environment:
-      # Override the default env-logger.
-      # RUST_LOG: "info,refinery_core=warn"
-      RUST_BACKTRACE: "1"
-    command: "/app/trail --data-dir /app/traildepot run --address 0.0.0.0:4000"

docker-compose.yml

@@ -0,0 +1,17 @@
+services:
+
+  trail:
+    image: docker.io/trailbase/trailbase:latest
+    ports:
+      - "${PORT:-4000}:4000"
+    restart: unless-stopped
+    volumes:
+      # NOTE: Docker compose will automatically create missing directories with
+      # "root" ownership. However, the TrailBase image drops root privileges.
+      # You therefore need to ensure that a `traildepot` folder with the
+      # appropriate permissions exist. Otherwise, you'll see "PermissionDenied"
+      # errors in the logs.
+      - ${DATA_DIR:-.}/traildepot:/app/traildepot
+    environment:
+      RUST_BACKTRACE: "1"
+    # command: "/app/trail --data-dir /app/traildepot run --address 0.0.0.0:4000"