feat: bundle hanime-plugin and Deno JS runtime in Docker image

- Add PIP_BREAK_SYSTEM_PACKAGES=1 to install hanime-plugin via pip
- Install Deno JS runtime required by the plugin's extractors
- Document plugin setup and JS runtime requirement in README
- Note plugin support in feature list

Dockerfile

@@ -14,7 +14,18 @@ RUN go build -o /usr/local/bin/uptodown-bot ./cmd/bot/
 
 FROM alpine:3.23
 
-RUN apk add --no-cache ffmpeg yt-dlp ca-certificates tzdata
+RUN apk add --no-cache ffmpeg yt-dlp ca-certificates tzdata py3-pip curl
+
+# Install yt-dlp plugins (add more as needed).
+# PIP_BREAK_SYSTEM_PACKAGES bypasses PEP 668 — safe in Docker.
+RUN PIP_BREAK_SYSTEM_PACKAGES=1 pip3 install --root-user-action=ignore --no-cache-dir hanime-plugin
+
+# Install Deno JS runtime (required by some yt-dlp plugins)
+RUN curl -fsSL https://deno.land/install.sh | sh
+ENV PATH="/root/.deno/bin:${PATH}"
+
+# Verify Deno is available
+RUN deno --version
 
 WORKDIR /data