Initial: luochen570-cli Docker image with zsh+zinit+NvChad+CLI tools

- Alpine-based Docker image
- zsh + zinit + Powerlevel10k
- zsh-autosuggestions, fast-syntax-highlighting
- CLI tools: yazi, eza, fzf, duf, ncdu, bat, tree, tmux
- NvChad (neovim IDE config)
- Weekly Gitea Actions build workflow (multi-arch)
- Gitea Container Registry publishing

Dockerfile

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+# luochen570-cli - Alpine-based CLI toolkit
+FROM alpine:latest
+
+LABEL org.opencontainers.image.title="luochen570-cli"
+LABEL org.opencontainers.image.description="Alpine-based CLI toolkit: zsh+zinit plugins, NvChad, and common CLI tools"
+LABEL org.opencontainers.image.source="https://git.luochen570.cn/luochen570/luochen570-cli"
+
+# ---- Install Alpine packages ----
+RUN apk add --no-cache \
+    # Core
+    zsh git curl ca-certificates openssl shadow-utils \
+    # CLI tools
+    eza fzf duf ncdu yazi bat tree \
+    # neovim (for NvChad)
+    neovim \
+    # runtime deps
+    tmux
+
+# ---- Set up zinit (zsh plugin manager) ----
+ENV ZINIT_HOME=/root/.local/share/zinit/zinit.git
+RUN mkdir -p "$(dirname "$ZINIT_HOME")" \
+    && git clone --depth 1 https://github.com/zdharma-continuum/zinit.git "$ZINIT_HOME"
+
+# ---- Copy zsh configs ----
+COPY configs/.zshrc /root/.zshrc
+COPY configs/.p10k.zsh /root/.p10k.zsh
+
+# ---- Pre-install zinit plugins ----
+RUN zsh -c 'source /root/.zshrc 2>/dev/null; zinit update --all 2>/dev/null || true'
+
+# ---- Set up NvChad (neovim IDE config) ----
+RUN git clone --depth 1 https://github.com/NvChad/starter /root/.config/nvim \
+    && rm -rf /root/.config/nvim/.git
+
+# ---- Set default shell ----
+SHELL ["/bin/zsh", "-c"]
+ENV SHELL=/bin/zsh
+CMD ["/bin/zsh"]