feat: Dockerfile for reproducible dev/ci environment

Author: fjfnaranjo

Dockerfile

@@ -0,0 +1,33 @@
+FROM debian:trixie
+
+ENV DEBIAN_FRONTEND=noninteractive
+
+# Base system environment
+RUN apt-get update \
+ && apt-get install -y --no-install-recommends \
+    build-essential \
+    curl \
+    wget \
+    npm \
+    luarocks \
+    ca-certificates \
+ && rm -rf /var/lib/apt/lists/*
+
+# Neovim
+RUN set -eux; \
+    mkdir -p /tmp/nvim; \
+    wget -O /tmp/nvim/nvim.tar.gz https://github.com/neovim/neovim/releases/download/stable/nvim-linux-x86_64.tar.gz; \
+    tar -xzf /tmp/nvim/nvim.tar.gz -C /tmp/nvim; \
+    cp -r /tmp/nvim/nvim-linux-x86_64/bin/* /usr/local/bin/; \
+    cp -r /tmp/nvim/nvim-linux-x86_64/lib/* /usr/local/lib/; \
+    cp -r /tmp/nvim/nvim-linux-x86_64/share/* /usr/local/share/; \
+    rm -rf /tmp/nvim
+
+# luacheck
+RUN luarocks install luacheck
+
+# stylua wrapper
+RUN set -eux; \
+    printf '#!/bin/sh\nnpx --yes @johnnymorganz/stylua-bin "$@"\n' > /usr/local/bin/stylua; \
+    chmod +x /usr/local/bin/stylua; \
+    npx --yes @johnnymorganz/stylua-bin --help >/dev/null 2>&1