feat: 🎉added Dockerfile and Makefile

Author: tmeckel

.dockerignore

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+*

Dockerfile

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+FROM node:22-slim AS builder
+
+SHELL ["/bin/bash", "-o", "pipefail", "-c"]
+
+ARG USERNAME=codex
+ARG UID=1000
+ARG GID=1000
+ARG CODEX_CLI_VERSION=latest
+
+RUN sed -i "/^[^:]*:x:${GID}:/d" /etc/group \
+    && sed -i "/^[^:]*:x:${UID}:/d" /etc/passwd \
+    && echo "${USERNAME}:x:${UID}:${GID}::/home/${USERNAME}:/sbin/nologin" >> /etc/passwd \
+    && echo "${USERNAME}:x:${GID}:" >> /etc/group \
+    && mkdir -p /home/${USERNAME} \
+    && chown -R ${USERNAME}:${USERNAME} /home/${USERNAME}
+
+# hadolint ignore=DL3008
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    ca-certificates \
+    git \
+    git-lfs \
+    curl \
+    gnupg \
+    jq \
+    ripgrep \
+    tzdata \
+    wget \
+    unzip \
+    zip \
+    && rm -rf /var/lib/apt/lists/*
+
+RUN npm install -g "@openai/codex@${CODEX_CLI_VERSION}"
+
+USER ${USERNAME}
+WORKDIR /work
+
+ENTRYPOINT ["codex"]

Makefile

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+# Simple Makefile to build and clean the local Docker image
+
+IMAGE ?= codex-cli
+TAG ?= dev
+IMAGE_REF := $(IMAGE):$(TAG)
+DOCKERFILE ?= Dockerfile
+CONTEXT ?= .
+
+.PHONY: build clean
+
+build:
+	docker build -t $(IMAGE_REF) -f $(DOCKERFILE) $(CONTEXT)
+
+clean:
+	@echo "Removing image $(IMAGE_REF) if it exists..."
+	- docker image inspect $(IMAGE_REF) >/dev/null 2>&1 && docker rmi $(IMAGE_REF) || true