Issue #1356: Add second Dockerfile without a Drupal installation.

Dockerfile-no-install

@@ -0,0 +1,11 @@
+FROM geerlingguy/docker-debian8-ansible:latest
+MAINTAINER Jeff Geerling
+
+# Copy provisioning directory and vars files into container.
+COPY ./ /etc/ansible/drupal-vm
+COPY ./provisioning/docker/vars/overrides-no-install.yml /etc/ansible/drupal-vm/local.config.yml
+
+# Provision Drupal VM inside Docker.
+RUN ansible-playbook /etc/ansible/drupal-vm/provisioning/playbook.yml
+
+EXPOSE 22 80 443 8025

example.docker-compose.yml

@@ -3,11 +3,12 @@ version: "3"
 services:
 
   drupal-vm:
+    # Switch the image to `geerlingguy/drupal-vm` if not using your own image.
     image: drupal-vm
     container_name: drupal-vm
     ports:
-      - 8080:80
-      - 8443:443
+      - 80:80
+      - 443:443
     privileged: true
     volumes:
       - ./:/var/www/drupalvm/:rw,cached

provisioning/docker/vars/overrides-no-install.yml

@@ -0,0 +1,15 @@
+---
+hostname_configure: false
+firewall_enabled: false
+installed_extras:
+  - adminer
+  - drush
+  - mailhog
+  - pimpmylog
+  # - varnish
+
+# Don't build or install Drupal inside the container.
+drupal_build_makefile: false
+drupal_build_composer: false
+drupal_build_composer_project: false
+drupal_install_site: false