Build in parallel

.github/workflows/ubuntu.yml

@@ -13,6 +13,14 @@ jobs:
   build:
     runs-on: ubuntu-24.04
 
+    strategy:
+      fail-fast: false
+
+      matrix:
+        version: [3.1.6, 3.2.5, 3.3.3]
+        line_editor: [libedit, readline]
+        compiler: [clang, gcc]
+
     steps:
       - uses: actions/checkout@v2
 
@@ -22,7 +30,7 @@ jobs:
           bundler-cache: true
 
       - name: Build and push docker image
-        run: bin/rake docker:build_all
+        run: bin/rake docker:build[${{ matrix.version }},${{ matrix.line_editor }},${{ matrix.compiler }}]
         env:
           DOCKER_PASS: ${{ secrets.DOCKER_PASS }}
 

tasks/docker.rake

@@ -9,10 +9,21 @@ namespace :docker do
   end
 
   desc "Build the default docker image"
-  task :build do
+  task :build_default do
     Docker::Manager.build_default
   end
 
+  desc "Builds a docker image"
+  task :build, %i[version line_editor compiler] do |_t, opts|
+    manager = Docker::Manager.new(
+      version: opts[:version],
+      line_editor: opts[:line_editor],
+      compiler: opts[:compiler]
+    )
+
+    manager.build
+  end
+
   desc "Build a ruby trunk image"
   task :build_and_push_head, %i[line_editor compiler] do |_t, opts|
     manager = Docker::Manager.new(