Dockerize CLI

Dockerfile

@@ -0,0 +1,18 @@
+FROM ruby:4.0-alpine
+
+RUN apk add --no-cache \
+    build-base \
+    git \
+    libgit2-dev \
+    cmake
+
+RUN gem install git-pkgs
+
+# The git repository (the mounted directory) has different ownership that the root user of the container.
+# Due to an update in git, a different user cannot perform git operations on the mounted directory.
+# This command allows the any user to perform git operations on the mounted directory.
+RUN git config --system --add safe.directory /mnt
+
+WORKDIR /mnt
+
+ENTRYPOINT ["git", "pkgs"]

README.md

@@ -23,6 +23,13 @@ Or with RubyGems:
 gem install git-pkgs
 ```
 
+Or using Docker:
+
+```bash
+docker build -t git-pkgs .
+docker run -it --rm -v $(pwd):/mnt git-pkgs <subcommand>
+```
+
 ## Quick start
 
 ```bash