Fix Docker systemd service start/stop order

Docker should start after containerd and stop before it. See: docker/for-linux#421 Without fix shutting down Raspi takes many minutes and reboot fails completely.
tkurki · May 28, 2019 · 1592324 · 1592324
1 parent 19dba91
commit 1592324
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diff --git a/roles/docker/handlers/main.yml b/roles/docker/handlers/main.yml
@@ -0,0 +1,4 @@
+---
+- name: "Reload systemd"
+  systemd:
+    daemon_reload: yes
diff --git a/roles/docker/tasks/main.yml b/roles/docker/tasks/main.yml
@@ -18,6 +18,15 @@
     path: /tmp/docker-install.sh
     state: absent
 
+# Fix Docker bug: add containerd as pre-requisite for Docker service, see: https://github.com/docker/for-linux/issues/421
+- name: Start Docker after containerd
+  lineinfile:
+    dest: /lib/systemd/system/docker.service
+    regexp: "^After="
+    line: "After=network-online.target firewalld.service containerd.service"
+  notify: Reload systemd
+  become: true
+
 - name: Set Docker to auto-start
   service:
     name: docker