Add new jenkins_docker_expose_port var

Author: emmetog

README.md

@@ -83,7 +83,11 @@ jenkins_plugins:
 jenkins_custom_plugins: []
 
 # Configs specific to the "docker" method of running jenkins
+# The name of the jenkins container
 jenkins_docker_container_name: jenkins
+# Default, if true, the port will be exposed on the host (using "port")
+# If set to false, the port will only be exposed to other containers (using "expose")
+jenkins_docker_expose_port: true
 ```
 
 Example Playbook
@@ -123,6 +127,10 @@ This gives you more flexibility and better separation of concerns. See
 the documentation in those projects for more details on how to deploy
 the proxies and configure HTTPS.
 
+If using a reverse proxy in front of the jenkins instance you probably 
+want to set the `jenkins_docker_expose_port` var to false so that the 
+port is not exposed on the host, only to the reverse proxy.
+
 Jenkins Configs
 ---------------
 

defaults/main.yml

@@ -45,4 +45,9 @@ jenkins_plugins:
 jenkins_custom_plugins: []
 
 # Configs specific to the "docker" method of running jenkins
+# The name of the jenkins container
 jenkins_docker_container_name: jenkins
+
+# Default, if true, the port will be exposed on the host (using "port")
+# If set to false, the port will only be exposed to other containers (using "expose")
+jenkins_docker_expose_port: true

tasks/docker/install.yml

@@ -8,7 +8,7 @@
     group: "{{ jenkins_config_group }}"
     state: directory
 
-- name: Container is running
+- name: Container is running (with ingress port)
   docker_container:
     name: "{{ jenkins_docker_container_name }}"
     image: "jenkins:{{ jenkins_version }}"
@@ -19,6 +19,19 @@
     env:
       JAVA_OPTS: "{{ jenkins_java_opts }}"
   register: container_result
+  when: jenkins_docker_expose_port
+
+- name: Container is running (without ingress port)
+  docker_container:
+    name: "{{ jenkins_docker_container_name }}"
+    image: "jenkins:{{ jenkins_version }}"
+    expose: "8080"
+    volumes:
+      - "{{ jenkins_home }}:/var/jenkins_home"
+    env:
+      JAVA_OPTS: "{{ jenkins_java_opts }}"
+  register: container_result
+  when: not jenkins_docker_expose_port
 
 - pause:
     seconds: 45