improve debugability of deployment examples

deployments/examples/ocis_s3/docker-compose.yml

@@ -24,6 +24,10 @@ services:
       # docker provider (get configuration from container labels)
       - "--providers.docker.endpoint=unix:///var/run/docker.sock"
       - "--providers.docker.exposedByDefault=false"
+      # access log
+      - "--accessLog=true"
+      - "--accessLog.format=json"
+      - "--accessLog.fields.headers.names.X-Request-Id=keep"
     ports:
       - "80:80"
       - "443:443"
@@ -54,7 +58,7 @@ services:
     command: ["-c", "ocis init || true; ocis server"]
     environment:
       OCIS_URL: https://${OCIS_DOMAIN:-ocis.owncloud.test}
-      OCIS_LOG_LEVEL: ${OCIS_LOG_LEVEL:-error} # make oCIS less verbose
+      OCIS_LOG_LEVEL: ${OCIS_LOG_LEVEL:-info}
       OCIS_LOG_COLOR: "${OCIS_LOG_COLOR:-false}"
       PROXY_TLS: "false" # do not use SSL between Traefik and oCIS
       # activate s3ng storage driver