Improve CI (#198)

* Use remote temp path, replace remote lookups.

* Copy local files.

* Change docker resource name prefix from ansible-test to ansible-docker-test to avoid collision with ansible-test's containers.

* Fix typos.

* We don't neceessarily have a TTY.

* Use hopefully less collision-likely subnet.

* More collision avoidance.

* More changes.

tests/integration/targets/docker_image/tasks/test.yml

@@ -1,7 +1,7 @@
 ---
 - name: Create random name prefix
   set_fact:
-    name_prefix: "{{ 'ansible-test-%0x' % ((2**32) | random) }}"
+    name_prefix: "{{ 'ansible-docker-test-%0x' % ((2**32) | random) }}"
 - name: Create image and container list
   set_fact:
     inames: []
@@ -12,13 +12,13 @@
 
 - name: Create files directory
   file:
-    path: '{{ output_dir }}/files'
+    path: '{{ remote_tmp_dir }}/files'
     state: directory
 
 - name: Template files
   template:
     src: '{{ item }}'
-    dest: '{{ output_dir }}/files/{{ item }}'
+    dest: '{{ remote_tmp_dir }}/files/{{ item }}'
   loop:
     - Dockerfile
     - EtcHostsDockerfile