chore: migrate dependency resolution to Policyfile

Author: damacus

.github/copilot-instructions.md

@@ -27,7 +27,7 @@
 
 ### Essential Commands (strict order)
 ```bash
-berks install                   # Install dependencies (always first)
+chef install Policyfile.rb                   # Install dependencies (always first)
 cookstyle                       # Ruby/Chef linting
 yamllint .                      # YAML linting
 markdownlint-cli2 '**/*.md'     # Markdown linting
@@ -42,7 +42,7 @@ chef exec rspec                 # Unit tests (ChefSpec)
 - **Full CI Runtime:** 30+ minutes for complete matrix
 
 ### Common Issues and Solutions
-- **Always run `berks install` first** - most failures are dependency-related
+- **Always run `chef install Policyfile.rb` first** - most failures are dependency-related
 - **Docker must be running** for kitchen tests
 - **Chef Workstation required** - no workarounds, no alternatives
 - **Test data bags needed** (optional for some cookbooks) in `test/integration/data_bags/` for convergence
@@ -88,7 +88,7 @@ These instructions are validated for Sous Chefs cookbooks. **Do not search for b
 
 **Error Resolution Checklist:**
 1. Verify Chef Workstation installation
-2. Confirm `berks install` completed successfully
+2. Confirm `chef install Policyfile.rb` completed successfully
 3. Ensure Docker is running for integration tests
 4. Check for missing test data dependencies
 

.github/workflows/copilot-setup-steps.yml

@@ -21,4 +21,4 @@ jobs:
       - name: Install Cinc Workstation
         uses: sous-chefs/.github/.github/actions/install-workstation@8.0.4
       - name: Install cookbooks
-        run: berks install
+        run: chef install Policyfile.rb

.gitignore

@@ -37,7 +37,6 @@ doc/
 rdoc
 
 # chef infra stuff
-Berksfile.lock
 .kitchen
 kitchen.local.yml
 vendor/

LIMITATIONS.md AGENTS.mdLIMITATIONS.md renamed to AGENTS.md

@@ -1,4 +1,15 @@
-# Docker Cookbook Limitations
+# AGENTS.md
+
+## Cookbook Purpose
+
+Provides docker_service, docker_image, and docker_container resources
+
+## Agent Findings
+
+* This cookbook is in an incremental modernization pass. Preserve existing public recipes and attributes unless a later full migration is explicitly selected.
+* Dependency management should use `Policyfile.rb`; do not reintroduce Berkshelf.
+
+## Known Limitations
 
 ## Supported Platforms
 

Berksfile

@@ -0,0 +1,14 @@
+# frozen_string_literal: true
+
+name 'docker'
+
+run_list 'recipe[test::default]'
+
+cookbook 'docker', path: '.'
+cookbook 'test', path: './test/cookbooks/test'
+
+Dir.children('./test/cookbooks/test/recipes').grep(/\.rb\z/).sort.each do |recipe|
+  recipe_name = File.basename(recipe, '.rb')
+
+  named_run_list recipe_name.to_sym, 'test::' + recipe_name
+end

Policyfile.rb

@@ -85,8 +85,6 @@ test/*
 
 # Berkshelf #
 #############
-Berksfile
-Berksfile.lock
 cookbooks/*
 tmp
 

chefignore

@@ -223,7 +223,7 @@ def coerce_tmpfs(v)
   when Hash, nil
     v
   when Array
-    v.each_with_object({}) { |path, h| h[path] = '' }
+    v.to_h { |path| [path, ''] }
   end
 end
 
@@ -307,9 +307,7 @@ def coerce_exposed_ports(v)
   else
     x = Array(v).map { |a| parse_port(a) }
     x.flatten!
-    x.each_with_object({}) do |y, h|
-      h[y['container_port']] = {}
-    end
+    x.to_h { |y| [y['container_port'], {}] }
   end
 end
 

resources/container.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 
 require 'chefspec'
-require 'chefspec/berkshelf'
+require 'chefspec/policyfile'
 
 class RSpecHelper
   class << self