Merge the .env from docker adddon with .env.example

.env.example

@@ -1,7 +1,6 @@
 # Used to verify the integrity of signed cookies. so ensure a secure value is set
 SECRET_KEY_BASE=replace_with_lengthy_secure_hex
 
-PORT=80
 REDIS_URL=redis://localhost:6379
 
 # CI/CD

.template/addons/docker/template.rb

@@ -6,5 +6,15 @@
 template 'docker-compose.dev.yml.tt'
 template 'docker-compose.test.yml.tt'
 template 'docker-compose.yml.tt'
-template '.env.tt'
 template '.dockerignore.tt'
+
+append_to_file '.env.example' do
+  <<~ENVEXAMPLE
+
+# Docker
+DOCKER_REGISTRY_HOST=#{DOCKER_REGISTRY_HOST}
+DOCKER_IMAGE=#{DOCKER_IMAGE}
+BRANCH_TAG=latest
+PORT=80
+  ENVEXAMPLE
+end

.template/hooks/before_complete/copy_env_example.rb

@@ -0,0 +1,11 @@
+# frozen_string_literal: true
+
+def copy_env_example
+  after_bundle do
+    use_source_path __dir__
+
+    run 'cp .env.example .env'
+  end
+end
+
+copy_env_example

.template/spec/base/template_spec.rb

@@ -35,7 +35,7 @@
     expect(file('.env.example')).to exist
   end
 
-  it 'does NOT creates .env file' do
-    expect(file('.env')).not_to exist
+  it 'creates .env file' do
+    expect(file('.env')).to exist
   end
 end

template.rb

@@ -81,6 +81,7 @@ def apply_template!(template_root)
 
   # A list necessary jobs that run before complete, ex: Fixing rubocop on Ruby files that generated by Rails
   apply '.template/hooks/before_complete/fix_rubocop.rb'
+  apply '.template/hooks/before_complete/copy_env_example.rb'
   apply '.template/hooks/before_complete/report.rb'
 end