diff --git a/Dockerfile b/Dockerfile
index 6b1cdc24..115873e5 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -1,58 +1,41 @@
 # syntax=docker/dockerfile:1@sha256:ac85f380a63b13dfcefa89046420e1781752bab202122f8f50032edf31be0021
 
-FROM buildpack-deps:bookworm AS model-fetch
-WORKDIR /app
-RUN wget https://github.com/jpreprocess/jpreprocess/releases/download/v0.6.1/naist-jdic-jpreprocess.tar.gz \
-    && tar xzf naist-jdic-jpreprocess.tar.gz \
-    && rm naist-jdic-jpreprocess.tar.gz
-RUN git clone --depth 1 https://github.com/icn-lab/htsvoice-tohoku-f01.git
-
-FROM ghcr.io/jqlang/jq:1.7 as fetch-jq
-
-FROM quay.io/curl/curl-base:8.4.0 as fetch-pnpm
+# ビルド時に基礎として使うイメージを定義
+FROM buildpack-deps:bookworm as base-build
 ENV SHELL="sh"
 ENV ENV="/tmp/env"
 ENV PNPM_HOME="/pnpm"
-WORKDIR /dist
-RUN --mount=type=bind,source=package.json,target=package.json \
-    --mount=type=bind,from=fetch-jq,source=/jq,target=/mounted-bin/jq \
-    curl -fsSL --compressed https://get.pnpm.io/install.sh | env PNPM_VERSION=$(cat package.json  | /mounted-bin/jq -r .packageManager | grep -oE '[0-9]+\.[0-9]+\.[0-9]+') sh -
-
-FROM buildpack-deps:bookworm as fetch-deps
-ENV PNPM_HOME="/pnpm"
 ENV PATH="$PNPM_HOME:$PATH"
-WORKDIR /package
-COPY --link --from=fetch-pnpm /pnpm/ /pnpm/
-RUN pnpm config set store-dir /.pnpm-store
-COPY --link .npmrc .node-version ./
-RUN echo "use-node-version=`cat .node-version`" >> .npmrc
-RUN --mount=type=cache,target=/.pnpm-store \
-    --mount=type=bind,source=pnpm-lock.yaml,target=pnpm-lock.yaml \
-    pnpm fetch
-COPY --link package.json ./
-
-FROM fetch-deps as dev-deps
-RUN --mount=type=cache,target=/.pnpm-store \
-    --mount=type=bind,source=pnpm-lock.yaml,target=pnpm-lock.yaml \
-    pnpm install --frozen-lockfile --offline
+# jqのバイナリを取得する => /jq
+FROM ghcr.io/jqlang/jq:1.7 as fetch-jq
 
-FROM buildpack-deps:bookworm as builder
-ENV PNPM_HOME="/pnpm"
-ENV PATH="$PNPM_HOME:$PATH"
+# 音声モデルを取得する => /app/
+FROM --platform=$BUILDPLATFORM base-build AS model-fetch
 WORKDIR /app
-RUN --mount=type=bind,from=fetch-deps,source=/pnpm/,target=/pnpm/ \
-    --mount=type=bind,from=dev-deps,source=/package/node_modules/,target=node_modules/ \
-    --mount=type=bind,source=package.json,target=package.json \
-    --mount=type=bind,source=.npmrc,target=.npmrc \
-    --mount=type=bind,source=build.js,target=build.js \
-    --mount=type=bind,source=src/,target=src/ \
-    pnpm build
+RUN wget https://github.com/jpreprocess/jpreprocess/releases/download/v0.6.1/naist-jdic-jpreprocess.tar.gz \
+    && tar xzf naist-jdic-jpreprocess.tar.gz \
+    && rm naist-jdic-jpreprocess.tar.gz
+RUN git clone --depth 1 https://github.com/icn-lab/htsvoice-tohoku-f01.git
 
-FROM fetch-deps as prod-deps
+FROM base-build as deps
+WORKDIR /app
+COPY --link --from=fetch-jq /jq ./
+COPY --link package.json ./
+RUN curl -fsSL --compressed https://get.pnpm.io/install.sh | env PNPM_VERSION=$(cat package.json  | ./jq -r .packageManager | grep -oE '[0-9]+\.[0-9]+\.[0-9]+') sh -
+COPY --link .npmrc .node-version ./
+RUN echo "store-dir=/.pnpm-store" >> .npmrc &&\
+    echo "use-node-version=`cat .node-version`" >> .npmrc
+COPY --link pnpm-lock.yaml ./
 ARG NODE_ENV="production"
-RUN --mount=type=cache,target=/.pnpm-store \
-    --mount=type=bind,source=pnpm-lock.yaml,target=pnpm-lock.yaml \
-    pnpm install --frozen-lockfile --offline
+RUN pnpm install --frozen-lockfile
+
+# ビルドする => /app/dist/
+FROM --platform=$BUILDPLATFORM deps as builder
+ARG NODE_ENV=""
+RUN pnpm install --frozen-lockfile
+COPY --link build.js ./
+COPY --link  src/ ./src/
+RUN pnpm build
 
 FROM gcr.io/distroless/cc-debian12:nonroot as runner
 ENV PNPM_HOME="/pnpm"
@@ -60,9 +43,10 @@ ENV PATH="$PNPM_HOME:$PATH"
 ENV NODE_ENV="production"
 WORKDIR /app
 COPY --link --from=model-fetch /app/ ./model/
-COPY --link --from=fetch-deps /pnpm/ /pnpm/
+COPY --link --from=deps /pnpm/ /pnpm/
 COPY --link --from=builder /app/dist/ ./dist/
-COPY --from=prod-deps /package/node_modules/ ./node_modules/
-COPY --link .npmrc package.json ./
+COPY --from=deps /app/node_modules/ ./node_modules/
+COPY --link --from=deps /app/.npmrc ./
+COPY --link package.json ./
 ENTRYPOINT [ "pnpm", "--shell-emulator" ]
 CMD [ "start" ]