Add initial systemd configs

etc/systemd/system/metobs_api.service

+[Unit]
+Description=MetObs Data and File API (/opt/metobs/metobs_api)
+Requires=metobs_api.socket
+After=network.target
+
+[Service]
+PIDFile=/run/metobs_api/pid
+User=daemon
+Group=metobsgrp
+RuntimeDirectory=metobs_api
+WorkingDirectory=/tmp
+ExecStart=/opt/metobs/metobs_api/bin/gunicorn --pid /run/metobs_api/pid   \
+          --bind unix:/run/metobs_api/socket --workers 8 metobsapi.server:app
+ExecReload=/bin/kill -s HUP $MAINPID
+ExecStop=/bin/kill -s TERM $MAINPID
+PrivateTmp=true
+Restart=always
+
+[Install]
+WantedBy=multi-user.target
\ No newline at end of file

etc/systemd/system/metobs_api.socket

+[Unit]
+Description=Socket used by the MetObs API application
+
+[Socket]
+ListenStream=8090
+
+[Install]
+WantedBy=sockets.target
\ No newline at end of file

etc/tmpfiles.d/metobs_api.conf

+d /run/metobs_api 0755 daemon metobsgrp -
\ No newline at end of file