Configure runner cache (#57)

https://docs.gitea.com/usage/actions/act-runner#configuring-cache-when-starting-a-runner-using-docker-image

gitea/config/act-runner-config.yml

@@ -36,10 +36,10 @@ cache:
   # The host of the cache server.
   # It's not for the address to listen, but the address to connect from job containers.
   # So 0.0.0.0 is a bad choice, leave it empty to detect automatically.
-  host: ""
+  host: "gitea.local"
   # The port of the cache server.
   # 0 means to use a random available port.
-  port: 0
+  port: 8088
 
 container:
   # Whether to use privileged mode or not when launching task containers (privileged mode is required for Docker-in-Docker).

gitea/docker-compose.yml

@@ -57,3 +57,5 @@ services:
       - /var/run/docker.sock:/var/run/docker.sock
       - ./act-runner:/data
       - ./config:/config:ro
+    ports:
+      - 8088:8088