Alpine

.circleci/config.yml

@@ -11,8 +11,8 @@ steps: &steps
           - dependencies-{{ checksum "Gemfile.lock" }}
 
     - run:
-        name: Run tests
-        command: bin/test.sh
+        name: Run CI checks
+        command: bin/ci.sh
 
     - run:
         name: Save coverage
@@ -29,26 +29,6 @@ steps: &steps
           - .bundle
 
 jobs:
-  lint:
-    docker:
-      - image: deividrodriguez/byebug:2.5.1-readline-clang
-
-    steps:
-      - checkout
-
-      - restore_cache:
-          keys:
-            - dependencies-{{ checksum "Gemfile.lock" }}
-
-      - run:
-          name: Run linters
-          command: bin/lint.sh
-
-      - save_cache:
-          key: dependencies-{{ checksum "Gemfile.lock" }}
-          paths:
-            - .bundle
-
   prior-to-prior-to-latest-readline-gcc:
     docker:
       - image: deividrodriguez/byebug:2.3.7-readline-gcc
@@ -132,55 +112,20 @@ workflows:
 
   test:
     jobs:
-      - lint
-
-      - prior-to-prior-to-latest-readline-gcc:
-          requires:
-            - lint
-
-      - prior-to-prior-to-latest-libedit-gcc:
-          requires:
-            - lint
-
-      - prior-to-prior-to-latest-readline-clang:
-          requires:
-            - lint
-
-      - prior-to-prior-to-latest-libedit-clang:
-          requires:
-            - lint
-
-      - prior-to-latest-readline-gcc:
-          requires:
-            - lint
-
-      - prior-to-latest-libedit-gcc:
-          requires:
-            - lint
-
-      - prior-to-latest-readline-clang:
-          requires:
-            - lint
-
-      - prior-to-latest-libedit-clang:
-          requires:
-            - lint
-
-      - latest-readline-gcc:
-          requires:
-            - lint
-
-      - latest-libedit-gcc:
-          requires:
-            - lint
-
-      - latest-readline-clang:
-          requires:
-            - lint
-
-      - latest-libedit-clang:
-          requires:
-            - lint
+      - prior-to-prior-to-latest-readline-gcc
+      - prior-to-prior-to-latest-libedit-gcc
+      - prior-to-prior-to-latest-readline-clang
+      - prior-to-prior-to-latest-libedit-clang
+
+      - prior-to-latest-readline-gcc
+      - prior-to-latest-libedit-gcc
+      - prior-to-latest-readline-clang
+      - prior-to-latest-libedit-clang
+
+      - latest-readline-gcc
+      - latest-libedit-gcc
+      - latest-readline-clang
+      - latest-libedit-clang
 
       - upload_coverage:
           requires:

.travis.yml

@@ -29,13 +29,14 @@ before_install:
 
 install:
   - gem update --system 2.7.7
+  - gem install bundler --version 1.16.3
 
   - if [ "$LIBEDIT" == "true" ]; then
       rvm reinstall "$TRAVIS_RUBY_VERSION" --configure --enable-libedit;
     fi
 
 script:
-  - bin/test.sh
+  - bin/ci.sh
 
 matrix:
   fast_finish: true

Gemfile.lock

@@ -82,4 +82,4 @@ DEPENDENCIES
   yard (= 0.9.15)
 
 BUNDLED WITH
-   1.16.2
+   1.16.3

bin/lint.sh → bin/ci.sh

@@ -5,6 +5,6 @@ set -eo pipefail
 set +x
 
 bin/bundle install --jobs 3 --retry 3 --path .bundle
-bin/rake lint
+bin/rake
 
 set -x

docker/Dockerfile

@@ -1,4 +1,4 @@
-FROM buildpack-deps:stretch
+FROM alpine:3.7
 
 # skip installing gem documentation
 RUN mkdir -p /usr/local/etc \
@@ -17,17 +17,34 @@ ENV CC $compiler
 
 RUN set -ex \
   \
-  && baseDeps="  \
-    $compiler \
+  && baseDeps=" \
+    bash \
+    ca-certificates \
+    cmake \
+    clang \
+    gcc \
+    libffi-dev \
+    libressl-dev \
+    make \
   " \
   && buildOnlyDeps=" \
-    libssl1.0-dev \
+    autoconf \
+    bison \
+    build-base \
+    bzip2-dev \
+    dpkg \
+    dpkg-dev \
+    gdbm-dev \
+    glib-dev \
+    libc-dev \
+    libxml2-dev \
+    libxslt-dev \
     $line_edit_lib \
+    linux-headers \
+    ncurses-dev \
     ruby \
   " \
-  && apt-get update \
-  && apt-get install -y --no-install-recommends $baseDeps $buildOnlyDeps \
-  && rm -rf /var/lib/apt/lists/* \
+  && apk add --no-cache --virtual .ruby-builddeps $baseDeps $buildOnlyDeps \
   \
   && wget -O ruby.tar.xz "https://cache.ruby-lang.org/pub/ruby/${ruby_version%.*}/ruby-$ruby_version.tar.xz" \
   && echo "$ruby_download_sha256 *ruby.tar.xz" | sha256sum -c - \
@@ -48,16 +65,32 @@ RUN set -ex \
   && make -j "$(nproc)" \
   && make install \
   \
-  && apt-get purge -y --auto-remove $buildOnlyDeps \
+  && libDeps="$( \
+    scanelf --needed --nobanner --format '%n#p' --recursive /usr/local \
+      | tr ',' '\n' \
+      | sort -u \
+      | awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' \
+  )" \
+  && runOnlyDeps=" \
+    $libDeps \
+    binutils \
+    git \
+    libc-dev \
+    libc6-compat \
+  " \
+  && apk add --virtual .ruby-rundeps $baseDeps $runOnlyDeps \
+  && apk del .ruby-builddeps \
   && cd / \
   && rm -r /usr/src/ruby \
   \
   && gem update --system 2.7.7 \
+  && gem install bundler --version 1.16.3 --force \
   && rm -r /root/.gem
 
-RUN apt-get update && apt-get install -y --no-install-recommends \
-  clang-format \
-  shellcheck
+RUN SHELLCHECK_VERSION=v0.5.0 \
+  && wget "https://storage.googleapis.com/shellcheck/shellcheck-$SHELLCHECK_VERSION.linux.x86_64.tar.xz" \
+  && tar -xJf shellcheck-$SHELLCHECK_VERSION.linux.x86_64.tar.xz \
+  && cp shellcheck-$SHELLCHECK_VERSION/shellcheck /usr/bin/
 
 ENV BUNDLE_SILENCE_ROOT_WARNING=1
 

docker/manager.rb

@@ -2,6 +2,7 @@
 
 require "net/http"
 require "yaml"
+require "open3"
 
 module Docker
   #
@@ -33,9 +34,7 @@ def initialize(version:, line_editor:, compiler:)
     end
 
     def build
-      print "Building image #{tag}... "
-
-      status = system <<-COMMAND, out: File::NULL
+      command = <<-COMMAND
         docker build \
           --tag "#{tag}" \
           --build-arg "ruby_version=#{version}" \
@@ -47,17 +46,19 @@ def build
           .
       COMMAND
 
-      puts(status ? "✔" : "❌")
+      print "Building image #{tag}: #{squish(command)}  "
+
+      run(command)
     end
 
     def test
-      print "Testing image #{tag}... "
-
-      status = system <<-COMMAND, out: File::NULL, err: File::NULL
-        docker run --rm -v$(pwd):/byebug #{tag} bash -c 'bundle && bundle exec rake'
+      command = <<-COMMAND
+        docker run --rm -v$(pwd):/byebug #{tag} bash -c ' bin/bundle && bin/rake'
       COMMAND
 
-      puts(status ? "✔" : "❌")
+      print "Testing image #{tag}: #{squish(command)}  "
+
+      run(command)
     end
 
     def push
@@ -77,11 +78,7 @@ def push
         return
       end
 
-      pushed = system <<-COMMAND, out: File::NULL
-        docker push #{tag}
-      COMMAND
-
-      puts pushed ? "✔" : "❌"
+      run("docker push #{tag}")
     end
 
     class << self
@@ -130,7 +127,7 @@ def for_all_images
     private
 
     def line_editor_package
-      line_editor == "readline" ? "libreadline-dev" : "libedit-dev"
+      line_editor == "readline" ? "readline-dev" : "libedit-dev"
     end
 
     def line_editor_configure_flag
@@ -145,8 +142,20 @@ def sha256
       release_info.find { |entry| entry["version"] == version }["sha256"]["xz"]
     end
 
+    def run(command)
+      output, status = Open3.capture2e(command)
+
+      puts(status ? "✔" : "❌")
+
+      puts output unless status.success?
+    end
+
     def tag
       "deividrodriguez/byebug:#{version}-#{line_editor}-#{compiler}"
     end
+
+    def squish(command)
+      command.gsub(/[\n ]+/, " ").strip
+    end
   end
 end

tasks/linter.rb

@@ -105,6 +105,6 @@ def applicable_files
   end
 
   def clean?(file)
-    !File.read(file, encoding: Encoding::UTF_8).match?(/ +$/)
+    File.read(file, encoding: Encoding::UTF_8) !~ / +$/
   end
 end