fix: garage ports on host mode (#99)

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Co-authored-by: f <f@sutty.nl>
Reviewed-on: coop-cloud/traefik#99
Reviewed-by: p4u1 <p4u1@noreply.git.coopcloud.tech>
Reviewed-by: decentral1se <decentral1se@noreply.git.coopcloud.tech>
Co-authored-by: fauno <fauno@sutty.coop.ar>
Co-committed-by: fauno <fauno@sutty.coop.ar>

compose.garage.yml

@@ -4,4 +4,7 @@ services:
     environment:
       - GARAGE_RPC_ENABLED
     ports:
-      - "3901:3901"
+      - target: 3901
+        published: 3901
+        protocol: tcp
+        mode: host