Quick and dirty ruby build

build/Dockerfile.ruby

@@ -0,0 +1,33 @@
+FROM archlinux:base-devel
+
+# Update packages and install dependencies for mise and Ruby compilation
+RUN pacman -Syu --noconfirm --needed git curl sudo ca-certificates openssl zlib libyaml libffi readline ncurses base-devel \
+    && pacman -Scc --noconfirm
+
+# Set mise environment variables for a consistent, container-friendly path
+ENV MISE_DATA_DIR=/mise
+ENV MISE_CONFIG_DIR=/mise
+ENV MISE_CACHE_DIR=/mise/cache
+ENV MISE_INSTALL_PATH=/usr/local/bin/mise
+ENV PATH=/mise/shims:$PATH
+
+# Install mise
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+RUN curl https://mise.run | sh
+
+# Set Ruby build options for relocatable/portable compilation
+ENV MISE_RUBY_BUILD_OPTS="--enable-load-relative --with-static-linked-ext"
+
+# Install Ruby 3.4.5
+RUN mise install ruby@3.4.5
+
+# Activate Ruby and install Rails
+RUN mise use ruby@3.4.5
+RUN gem install rails --version 8.0.2.1
+
+# Generate a temporary Rails app to install default gems
+RUN rails new temp_app \
+    && rm -rf temp_app
+
+# Create a single tarball with Ruby and all gems
+RUN tar -czf /ruby-3.4.5-rails-8.0.2.1.tar.gz -C /mise/installs/ruby 3.4.5