diff --git a/Dockerfile b/Dockerfile
index 8ad4bbbfb10b73b7c61ffe873add8765dfb52cb4..7e0a778862ec9fee84677557c002b1fd85ed44a6 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,10 +4,6 @@ ARG NODE_VERSION=20.10.0-alpine3.18
 
 FROM node:${NODE_VERSION} as build
 
-RUN corepack enable
-
-WORKDIR /sharkey
-
 RUN apk add git linux-headers build-base
 
 ENV PYTHONUNBUFFERED=1
@@ -15,55 +11,70 @@ RUN apk add --update python3 && ln -sf python3 /usr/bin/python
 RUN python3 -m ensurepip
 RUN pip3 install --no-cache --upgrade pip setuptools
 
-COPY . ./
+RUN corepack enable
+
+WORKDIR /sharkey
+
+COPY --link . ./
 
 RUN git submodule update --init --recursive
 RUN pnpm config set fetch-retries 5
 RUN --mount=type=cache,target=/root/.local/share/pnpm/store,sharing=locked \
-	pnpm i
+	pnpm i --frozen-lockfile --aggregate-output
 RUN pnpm build
 RUN node scripts/trim-deps.mjs
 RUN mv packages/frontend/assets sharkey-assets
+RUN --mount=type=cache,target=/root/.local/share/pnpm/store,sharing=locked \
+	pnpm prune
 RUN rm -r node_modules packages/frontend packages/sw
 RUN --mount=type=cache,target=/root/.local/share/pnpm/store,sharing=locked \
-	pnpm i --prod
+	pnpm i --prod --frozen-lockfile --aggregate-output
 RUN rm -rf .git
 
 FROM node:${NODE_VERSION}
 
-WORKDIR /sharkey
+ARG UID="991"
+ARG GID="991"
 
-RUN apk add ffmpeg tini
+RUN apk add ffmpeg tini jemalloc \
+	&& corepack enable \
+	&& addgroup -g "${GID}" sharkey \
+	&& adduser -D -u "${UID}" -G sharkey -h /sharkey sharkey \
+	&& find / -type d -path /sys -prune -o -type d -path /proc -prune -o -type f -perm /u+s -exec chmod u-s {} \; \
+	&& find / -type d -path /sys -prune -o -type d -path /proc -prune -o -type f -perm /g+s -exec chmod g-s {} \;
 
-COPY --from=build /sharkey/built ./built
-COPY --from=build /sharkey/node_modules ./node_modules
-COPY --from=build /sharkey/packages/backend/built ./packages/backend/built
-COPY --from=build /sharkey/packages/backend/node_modules ./packages/backend/node_modules
-COPY --from=build /sharkey/packages/megalodon/lib ./packages/megalodon/lib
-COPY --from=build /sharkey/packages/megalodon/node_modules ./packages/megalodon/node_modules
-COPY --from=build /sharkey/packages/misskey-js/built ./packages/misskey-js/built
-COPY --from=build /sharkey/packages/misskey-js/node_modules ./packages/misskey-js/node_modules
-COPY --from=build /sharkey/packages/misskey-reversi/built ./packages/misskey-reversi/built
-COPY --from=build /sharkey/packages/misskey-reversi/node_modules ./packages/misskey-reversi/node_modules
-COPY --from=build /sharkey/packages/misskey-bubble-game/built ./packages/misskey-bubble-game/built
-COPY --from=build /sharkey/packages/misskey-bubble-game/node_modules ./packages/misskey-bubble-game/node_modules
-COPY --from=build /sharkey/fluent-emojis ./fluent-emojis
-COPY --from=build /sharkey/tossface-emojis/dist ./tossface-emojis/dist
-COPY --from=build /sharkey/sharkey-assets ./packages/frontend/assets
+USER sharkey
+WORKDIR /sharkey
+
+COPY --chown=sharkey:sharkey --from=build /sharkey/node_modules ./node_modules
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/backend/node_modules ./packages/backend/node_modules
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/misskey-js/node_modules ./packages/misskey-js/node_modules
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/misskey-reversi/node_modules ./packages/misskey-reversi/node_modules
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/misskey-bubble-game/node_modules ./packages/misskey-bubble-game/node_modules
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/megalodon/node_modules ./packages/megalodon/node_modules
+COPY --chown=sharkey:sharkey --from=build /sharkey/built ./built
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/misskey-js/built ./packages/misskey-js/built
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/misskey-reversi/built ./packages/misskey-reversi/built
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/misskey-bubble-game/built ./packages/misskey-bubble-game/built
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/backend/built ./packages/backend/built
+COPY --chown=sharkey:sharkey --from=build /sharkey/packages/megalodon/lib ./packages/megalodon/lib
+COPY --chown=sharkey:sharkey --from=build /sharkey/fluent-emojis ./fluent-emojis
+COPY --chown=sharkey:sharkey --from=build /sharkey/tossface-emojis/dist ./tossface-emojis/dist
+COPY --chown=sharkey:sharkey --from=build /sharkey/sharkey-assets ./packages/frontend/assets
 
-COPY package.json ./package.json
-COPY pnpm-workspace.yaml ./pnpm-workspace.yaml
-COPY packages/backend/package.json ./packages/backend/package.json
-COPY packages/backend/check_connect.js ./packages/backend/check_connect.js
-COPY packages/backend/ormconfig.js ./packages/backend/ormconfig.js
-COPY packages/backend/migration ./packages/backend/migration
-COPY packages/backend/assets ./packages/backend/assets
-COPY packages/megalodon/package.json ./packages/megalodon/package.json
-COPY packages/misskey-js/package.json ./packages/misskey-js/package.json
-COPY packages/misskey-reversi/package.json ./packages/misskey-reversi/package.json
-COPY packages/misskey-bubble-game/package.json ./packages/misskey-bubble-game/package.json
+COPY --chown=sharkey:sharkey package.json ./package.json
+COPY --chown=sharkey:sharkey pnpm-workspace.yaml ./pnpm-workspace.yaml
+COPY --chown=sharkey:sharkey packages/backend/package.json ./packages/backend/package.json
+COPY --chown=sharkey:sharkey packages/backend/check_connect.js ./packages/backend/check_connect.js
+COPY --chown=sharkey:sharkey packages/backend/ormconfig.js ./packages/backend/ormconfig.js
+COPY --chown=sharkey:sharkey packages/backend/migration ./packages/backend/migration
+COPY --chown=sharkey:sharkey packages/backend/assets ./packages/backend/assets
+COPY --chown=sharkey:sharkey packages/megalodon/package.json ./packages/megalodon/package.json
+COPY --chown=sharkey:sharkey packages/misskey-js/package.json ./packages/misskey-js/package.json
+COPY --chown=sharkey:sharkey packages/misskey-reversi/package.json ./packages/misskey-reversi/package.json
+COPY --chown=sharkey:sharkey packages/misskey-bubble-game/package.json ./packages/misskey-bubble-game/package.json
 
+ENV LD_PRELOAD=/usr/lib/libjemalloc.so.2
 ENV NODE_ENV=production
-RUN corepack enable
 ENTRYPOINT ["/sbin/tini", "--"]
 CMD ["pnpm", "run", "migrateandstart"]