do not require privileged iso container

* The init call w/ privileged was causing my laptop to wig out. This
changeset still functions w/ out requiring privileged access.

tools/docker-isolated-override.yml

@@ -14,4 +14,6 @@ services:
       - "../awx/main/expect:/awx_devel"
       - "../awx/lib:/awx_lib"
       - "/sys/fs/cgroup:/sys/fs/cgroup:ro"
-    privileged: true
+    tmpfs:
+      - "/tmp:exec"
+      - "/run"

tools/docker-isolated/Dockerfile

@@ -27,4 +27,7 @@ RUN ssh-keygen -A
 RUN mkdir -p /root/.ssh
 RUN touch /root/.ssh/authorized_keys
 
+STOPSIGNAL SIGRTMIN+3
+
+
 CMD ["/usr/sbin/init"]