Added poa-blockscout service

roles/blockscout/handlers/main.yml

@@ -0,0 +1,3 @@
+---
+- name: restart poa-blockscout
+  service: name=poa-blockscout state=restarted

roles/blockscout/tasks/main.yml

@@ -50,5 +50,10 @@
     state: present
   become: true
 
-- name: Start server
-  shell: cd {{ home }}/blockscout && mix phx.server
+- name: Install poa-blockscout service
+  template: src=poa-blockscout.j2 dest=/etc/systemd/system/poa-blockscout.service owner={{ username }} group={{ username }} mode=0755
+  notify:
+  - restart poa-blockscout
+
+- name: Ensure poa-blockscout is running and enabled to start at boot
+  service: name=poa-blockscout state=started enabled=yes

roles/blockscout/templates/poa-blockscout.j2

@@ -0,0 +1,14 @@
+[Unit]
+Description=poa blockscout service
+After=network.target
+[Service]
+User=root
+Group=root
+WorkingDirectory={{ home }}/blockscout
+Restart=on-failure
+RestartSec=5
+ExecStartPre=/usr/local/bin/mix local.hex --force
+ExecStart=/usr/local/bin/mix phx.server
+Type=simple
+[Install]
+WantedBy=multi-user.target