Better systemd service dependencies declaration

service/webodm-celery.service

@@ -1,6 +1,7 @@
 [Unit]
 Description=Start WebODM Celery Service Container
-Requires=webodm-nginx.service
+Requires=webodm-gunicorn.service
+After=webodm-gunicorn.service
 
 [Service]
 Type=simple

service/webodm-celerybeat.service

@@ -1,6 +1,7 @@
 [Unit]
 Description=Start WebODM Celery Scheduler Service Container
-Requires=webodm-nginx.service
+Requires=webodm-gunicorn.service
+After=webodm-gunicorn.service
 
 [Service]
 Type=simple

service/webodm-docker.service

@@ -1,6 +1,7 @@
 [Unit]
 Description=Start WebODM OpenDroneMap Service Container
 Requires=docker.service
+After=docker.service
 
 [Service]
 Type=forking

service/webodm-gunicorn.service

@@ -1,6 +1,7 @@
 [Unit]
 Description=Start WebODM Gunicorn Service Container
-Requires=webodm-nginx.service
+Requires=webodm-nginx.service postgresql.service
+After=webodm-nginx.service postgresql.service
 
 [Service]
 Type=simple