.travis.yml in net-ldap-0.16.1 vs .travis.yml in net-ldap-0.16.2

@@ -1,23 +1,45 @@
 language: ruby
 rvm:
   - 2.0.0
   - 2.1
   - 2.2
+  - 2.3
+  - 2.4
+  - 2.5
+  - 2.6
   # optional
   - ruby-head
   - jruby-19mode
   - jruby-head
   - rbx-2
 
+addons:
+  hosts:
+    - ldap.example.org # needed for TLS verification
+
+services:
+  - docker
+
 env:
   - INTEGRATION=openldap
 
 before_install:
   - gem update bundler
 
 install:
-  - if [ "$INTEGRATION" = "openldap" ]; then sudo script/install-openldap; fi
+  - >
+    docker run \
+      --hostname ldap.example.org \
+      --env LDAP_TLS_VERIFY_CLIENT=try \
+      -p 389:389 \
+      -p 636:636 \
+      -v "$(pwd)"/test/fixtures/ldif:/container/service/slapd/assets/config/bootstrap/ldif/custom \
+      --name openldap \
+      --detach \
+      osixia/openldap:1.3.0 \
+        --copy-service \
+        --loglevel debug \
   - bundle install
 
 script: bundle exec rake ci
 
 matrix: