diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 103547d7d2..4c5dde2a5d 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,36 +1,5 @@
 stages:
-  - test
   - deploy
-
-testCommit:
-  stage: test
-  image: node:latest
-  services:
-    - postgres:15
-    - redis
-  variables:
-    POSTGRES_PASSWORD: ci
-  script:
-    - apt-get update && apt-get install -y git wget curl build-essential python3 
-    - cp .config/ci.yml .config/default.yml
-    - corepack enable
-    - corepack prepare pnpm@latest --activate
-    - git submodule update --init
-    - pnpm install --frozen-lockfile
-    - pnpm run build
-    - pnpm run migrate
-  cache:
-    key: test
-    policy: pull-push
-    when: on_success
-    paths:
-     - node_modules/
-     - packages/*/node_modules/
-  only:
-    - develop
-    - merge_requests
-    - stable
-
 getImageTag:
   stage: deploy
   image: ubuntu:latest
@@ -41,8 +10,8 @@ getImageTag:
         tag="$CI_COMMIT_TAG"
       elif test "$CI_COMMIT_BRANCH" == "stable"; then
         tag="latest"
-      elif test "$CI_COMMIT_BRANCH" == "develop"; then
-        tag="develop"
+      elif test "$CI_COMMIT_BRANCH" == "docker-debug"; then
+        tag="docker-debug"
       else
         tag="$CI_COMMIT_BRANCH"
       fi
@@ -55,6 +24,8 @@ getImageTag:
   only:
     - stable
     - develop
+    - docker-debug
+
 buildDocker:
   stage: deploy
   needs:
@@ -77,7 +48,7 @@ buildDocker:
       --destination "${CI_REGISTRY_IMAGE}:${REGISTRY_PUSH_VERSION}-${ARCH}"
   only:
     - stable
-    - develop
+    - docker-debug
 mergeManifests:
   stage: deploy
   needs:
@@ -102,4 +73,4 @@ mergeManifests:
       --target ${CI_REGISTRY_IMAGE}:${REGISTRY_PUSH_TAG}
   only:
     - stable
-    - develop
+    - docker-debug
diff --git a/Dockerfile b/Dockerfile
index 8ad4bbbfb1..9b5e1810dd 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,69 +1,106 @@
 # syntax = docker/dockerfile:1.4
 
-ARG NODE_VERSION=20.10.0-alpine3.18
+ARG NODE_VERSION=20.10.0-bullseye
 
-FROM node:${NODE_VERSION} as build
+# build assets & compile TypeScript
+
+FROM --platform=$BUILDPLATFORM node:${NODE_VERSION} AS native-builder
+
+RUN --mount=type=cache,target=/var/cache/apt,sharing=locked \
+	--mount=type=cache,target=/var/lib/apt,sharing=locked \
+	rm -f /etc/apt/apt.conf.d/docker-clean \
+	; echo 'Binary::apt::APT::Keep-Downloaded-Packages "true";' > /etc/apt/apt.conf.d/keep-cache \
+	&& apt-get update \
+	&& apt-get install -yqq --no-install-recommends \
+	build-essential
 
 RUN corepack enable
 
 WORKDIR /sharkey
 
-RUN apk add git linux-headers build-base
+COPY --link ["pnpm-lock.yaml", "pnpm-workspace.yaml", "package.json", "./"]
+COPY --link ["scripts", "./scripts"]
+COPY --link ["packages/backend/package.json", "./packages/backend/"]
+COPY --link ["packages/frontend/package.json", "./packages/frontend/"]
+COPY --link ["packages/sw/package.json", "./packages/sw/"]
+COPY --link ["packages/misskey-js/package.json", "./packages/misskey-js/"]
+COPY --link ["packages/misskey-reversi/package.json", "./packages/misskey-reversi/"]
+COPY --link ["packages/misskey-bubble-game/package.json", "./packages/misskey-bubble-game/"]
 
-ENV PYTHONUNBUFFERED=1
-RUN apk add --update python3 && ln -sf python3 /usr/bin/python
-RUN python3 -m ensurepip
-RUN pip3 install --no-cache --upgrade pip setuptools
+ARG NODE_ENV=production
 
-COPY . ./
-
-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
+
+COPY --link . ./
+
+RUN git submodule update --init
 RUN pnpm build
-RUN node scripts/trim-deps.mjs
-RUN mv packages/frontend/assets sharkey-assets
-RUN rm -r node_modules packages/frontend packages/sw
-RUN --mount=type=cache,target=/root/.local/share/pnpm/store,sharing=locked \
-	pnpm i --prod
-RUN rm -rf .git
+RUN rm -rf .git/
 
-FROM node:${NODE_VERSION}
+# build native dependencies for target platform
+
+FROM --platform=$TARGETPLATFORM node:${NODE_VERSION} AS target-builder
+
+RUN apt-get update \
+	&& apt-get install -yqq --no-install-recommends \
+	build-essential
+
+RUN corepack enable
 
 WORKDIR /sharkey
 
-RUN apk add ffmpeg tini
+COPY --link ["pnpm-lock.yaml", "pnpm-workspace.yaml", "package.json", "./"]
+COPY --link ["scripts", "./scripts"]
+COPY --link ["packages/backend/package.json", "./packages/backend/"]
+COPY --link ["packages/misskey-js/package.json", "./packages/misskey-js/"]
+COPY --link ["packages/misskey-reversi/package.json", "./packages/misskey-reversi/"]
+COPY --link ["packages/misskey-bubble-game/package.json", "./packages/misskey-bubble-game/"]
 
-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
+ARG NODE_ENV=production
 
-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
+RUN --mount=type=cache,target=/root/.local/share/pnpm/store,sharing=locked \
+	pnpm i --frozen-lockfile --aggregate-output
 
+FROM --platform=$TARGETPLATFORM node:${NODE_VERSION}-slim AS runner
+
+ARG UID="991"
+ARG GID="991"
+
+RUN apt-get update \
+	&& apt-get install -y --no-install-recommends \
+	ffmpeg tini curl libjemalloc-dev libjemalloc2 \
+	&& ln -s /usr/lib/$(uname -m)-linux-gnu/libjemalloc.so.2 /usr/local/lib/libjemalloc.so \
+	&& corepack enable \
+	&& groupadd -g "${GID}" sharkey \
+	&& useradd -l -u "${UID}" -g "${GID}" -m -d /sharkey sharkey \
+	&& find / -type d -path /sys -prune -o -type d -path /proc -prune -o -type f -perm /u+s -ignore_readdir_race -exec chmod u-s {} \; \
+	&& find / -type d -path /sys -prune -o -type d -path /proc -prune -o -type f -perm /g+s -ignore_readdir_race -exec chmod g-s {} \; \
+	&& apt-get clean \
+	&& rm -rf /var/lib/apt/lists
+
+USER sharkey
+WORKDIR /sharkey
+
+COPY --chown=sharkey:sharkey --from=target-builder /sharkey/node_modules ./node_modules
+COPY --chown=sharkey:sharkey --from=target-builder /sharkey/packages/backend/node_modules ./packages/backend/node_modules
+COPY --chown=sharkey:sharkey --from=target-builder /sharkey/packages/misskey-js/node_modules ./packages/misskey-js/node_modules
+COPY --chown=sharkey:sharkey --from=target-builder /sharkey/packages/misskey-reversi/node_modules ./packages/misskey-reversi/node_modules
+COPY --chown=sharkey:sharkey --from=target-builder /sharkey/packages/misskey-bubble-game/node_modules ./packages/misskey-bubble-game/node_modules
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/built ./built
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/packages/misskey-js/built ./packages/misskey-js/built
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/packages/misskey-reversi/built ./packages/misskey-reversi/built
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/packages/misskey-bubble-game/built ./packages/misskey-bubble-game/built
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/packages/backend/built ./packages/backend/built
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/fluent-emojis /misskey/fluent-emojis
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/packages/megalodon/node_modules ./packages/megalodon/node_modules
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/packages/misskey-js/built ./packages/misskey-js/built
+COPY --chown=sharkey:sharkey --from=native-builder /sharkey/tossface-emojis/dist ./tossface-emojis/dist
+
+COPY --chown=sharkey:sharkey . ./
+
+ENV LD_PRELOAD=/usr/local/lib/libjemalloc.so
 ENV NODE_ENV=production
-RUN corepack enable
-ENTRYPOINT ["/sbin/tini", "--"]
-CMD ["pnpm", "run", "migrateandstart"]
+HEALTHCHECK --interval=5s --retries=20 CMD ["/bin/bash", "/sharkey/healthcheck.sh"]
+ENTRYPOINT ["/usr/bin/tini", "--"]
+CMD ["pnpm", "run", "migrateandstart"]
\ No newline at end of file
diff --git a/package.json b/package.json
index 970eddd0e1..338a033d30 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
 	"name": "sharkey",
-	"version": "2024.2.0-beta.12",
+	"version": "2024.2.0-beta.12-docker-debug",
 	"codename": "shonk",
 	"repository": {
 		"type": "git",