diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..8676abd
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,9 @@
+# syntax=docker/dockerfile:1
+FROM ruby:3.2.3-alpine as base
+
+RUN apk --update add build-base git curl
+
+WORKDIR /app
+
+COPY . /app
+RUN bundle install
diff --git a/Gemfile.lock b/Gemfile.lock
index 7a2113f..67767d0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,6 +57,7 @@ GEM
     unicode-display_width (2.5.0)
 
 PLATFORMS
+  aarch64-linux-musl
   arm64-darwin-23
   x86_64-linux
 
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..99e5073
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,7 @@
+services:
+  simplecov-inline:
+    build:
+      context: .
+    volumes:
+      - .:/app
+      - ${APPBOT_TOOL_FRIENDLY_HOST:-/dev/null}:${APPBOT_TOOL_FRIENDLY_CONTAINER:-/dev/null} # see usage in .env_example file
diff --git a/docker/bundle b/docker/bundle
new file mode 100755
index 0000000..6331630
--- /dev/null
+++ b/docker/bundle
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# https://gist.github.com/vncsna/64825d5609c146e80de8b1fd623011ca
+set -euo pipefail
+
+echo '[docker container]'
+
+docker compose run --rm simplecov-inline bundle $*
diff --git a/docker/rubocop b/docker/rubocop
new file mode 100755
index 0000000..849679f
--- /dev/null
+++ b/docker/rubocop
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# https://gist.github.com/vncsna/64825d5609c146e80de8b1fd623011ca
+set -euo pipefail
+
+echo '[docker container]'
+
+docker compose run --rm simplecov-inline rubocop $*
diff --git a/docker/setup b/docker/setup
new file mode 100755
index 0000000..b6f6929
--- /dev/null
+++ b/docker/setup
@@ -0,0 +1,8 @@
+#!/bin/bash
+
+# https://gist.github.com/vncsna/64825d5609c146e80de8b1fd623011ca
+set -euo pipefail
+
+echo '[docker container]'
+docker compose down --remove-orphans
+docker compose build
diff --git a/simplecov-inline.gemspec b/simplecov-inline.gemspec
index 87afbe7..1a290f4 100644
--- a/simplecov-inline.gemspec
+++ b/simplecov-inline.gemspec
@@ -11,7 +11,7 @@ Gem::Specification.new do |spec|
   spec.summary = "See missed lines of coverage inline with rspec output."
   spec.homepage = "https://github.com/appbot/simplecov-inline"
   spec.license = "MIT"
-  spec.required_ruby_version = ">= 2.6.0"
+  spec.required_ruby_version = '>= 3.1.0'
 
   spec.metadata["homepage_uri"] = spec.homepage
   spec.metadata["source_code_uri"] = "https://github.com/appbot/simplecov-inline"