feat: ssh-agent instead of filesystem based ssh keys

docker/dev-ssu/etc/s6-overlay/s6-rc.d/horizon/run

@@ -0,0 +1,5 @@
+#!/command/execlineb -P
+foreground {
+  s6-sleep 5
+  su - webuser -c "php /var/www/html/artisan horizon"
+}

docker/dev-ssu/etc/s6-overlay/s6-rc.d/queue-worker/run

@@ -1,2 +0,0 @@
-#!/command/execlineb -P
-su - webuser -c "php /var/www/html/artisan queue:listen"

docker/dev-ssu/etc/s6-overlay/s6-rc.d/scheduler-worker/run

@@ -1,2 +1,5 @@
 #!/command/execlineb -P
-su - webuser -c "php /var/www/html/artisan schedule:work"
+foreground {
+  s6-sleep 5
+  su - webuser -c "php /var/www/html/artisan schedule:work"
+}

docker/dev-ssu/etc/s6-overlay/s6-rc.d/ssh-agent/type

@@ -0,0 +1 @@
+oneshot

docker/dev-ssu/etc/s6-overlay/s6-rc.d/ssh-agent/up

@@ -0,0 +1,5 @@
+#!/usr/bin/execlineb -P
+foreground {
+  s6-sleep 5
+  su - webuser -c "ssh-agent -a /tmp/coolify-ssh-agent.sock"
+}