Fix docker issues

README.md

@@ -83,4 +83,4 @@ Here's a sample compose yaml snippet for `linuxserver/docker-socket-proxy`:
     tmpfs:
       - /run
 ```
-Then the env var in SWAG can be set as `DOCKER_HOST=tcp://socket-proxy:2375`. This will allow docker in SWAG to be able to start/stop existing containers, but it won't be allowed to spin up new containers.
+Then the env var in SWAG can be set as `DOCKER_HOST=socket-proxy`. This will allow SWAG to be able to start/stop existing containers, but it won't be allowed to spin up new containers.

root/app/swag-ondemand.py

@@ -20,9 +20,16 @@ def __init__(self):
         self.daemon = True
         self.ondemand_containers = {}
         try:
-            self.docker_client = docker.from_env()
+            docker_host = os.environ.get("DOCKER_HOST", None)
+            if docker_host:
+                if not docker_host.startswith("tcp://"):
+                    docker_host = f"tcp://{docker_host}:2375"
+                self.docker_client = docker.DockerClient(base_url=docker_host)
+            else:
+                self.docker_client = docker.from_env()
         except Exception as e:
             logging.exception(e)
+            os._exit(1)
 
     def process_containers(self):
         containers = self.docker_client.containers.list(all=True, filters={ "label": ["swag_ondemand=enable"] })

root/etc/logrotate.d/ondemand

@@ -0,0 +1,11 @@
+/config/log/ondemand/*.log {
+        weekly
+        rotate 14
+        compress
+        delaycompress
+        nodateext
+        notifempty
+        missingok
+        sharedscripts
+        su abc abc
+}

root/etc/s6-overlay/s6-rc.d/svc-mod-swag-ondemand/run

@@ -1,3 +1,8 @@
 #!/usr/bin/with-contenv bash
 
-exec s6-setuidgid abc python3 /app/swag-ondemand.py
+result=$(exec s6-setuidgid abc python3 /app/swag-ondemand.py)
+if [ $? -ne 0 ]; then
+    echo "***** Error: swag-ondemand failed to run *****"
+    echo "${result}"
+    sleep infinity
+fi