diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..5f36a3a
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,21 @@
+# Load the Docker image.
+FROM ruby:3.0.3-alpine3.13
+
+# Define environment variables.
+ENV LANG C.UTF-8
+ENV PS1 '▶ '
+
+# Install Packages.
+RUN apk update && apk upgrade && apk add --update --no-cache \
+  build-base \
+  postgresql-dev \
+  tzdata \
+  nodejs \
+  git \
+  libc6-compat
+
+# Install Rails.
+RUN gem install rails
+
+# Set up a work directory.
+WORKDIR /rails-7-hotwire
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 0000000..6f82d79
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,8 @@
+version: '3'
+
+services:
+  generator:
+    build: .
+    container_name: generator
+    volumes:
+      - .:/rails-7-hotwire