chore: use alpine linux to minimize image size

Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:labs
 
-FROM node:22-slim AS base
+FROM node:22-alpine AS base
 RUN rm -f /etc/apt/apt.conf.d/docker-clean; echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
   --mount=type=cache,target=/var/lib/apt,sharing=locked \
@@ -36,7 +36,7 @@ RUN --mount=type=cache,id=pnpm,target=/pnpm/store,sharing=locked \
     pnpm deploy --filter=q2tg-main --prod deploy
 RUN cd ui && pnpm run build
 
-FROM debian:bookworm-slim AS tgs-to-gif-build
+FROM alpine:latest AS tgs-to-gif-build
 RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
   --mount=type=cache,target=/var/lib/apt,sharing=locked \
   apt update && apt-get --no-install-recommends install -y \