docker: Wait 3 secs for each process, and fix caddy supervisor unit

var/docker/supervisord/backend.conf

@@ -6,3 +6,4 @@ autorestart=false
 redirect_stderr=true
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0
+startsecs=10

var/docker/supervisord/caddy.conf

@@ -1,4 +1,4 @@
-[program:backend]
+[program:caddy]
 directory=/app
 command=caddy run --config /app/Caddyfile
 autostart=true
@@ -6,3 +6,4 @@ autorestart=false
 redirect_stderr=true
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0
+startsecs=3

var/docker/supervisord/cron.conf

@@ -6,3 +6,4 @@ autorestart=false
 redirect_stderr=true
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0
+startsecs=3

var/docker/supervisord/frontend.conf

@@ -7,3 +7,4 @@ redirect_stderr=true
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0
 environment=PORT=4200
+startsecs=3

var/docker/supervisord/workers.conf

@@ -6,3 +6,4 @@ autorestart=false
 redirect_stderr=true
 stdout_logfile=/dev/fd/1
 stdout_logfile_maxbytes=0
+startsecs=3