Improve local dev experience

Dockerfile

@@ -1,28 +1,16 @@
 FROM node:24-alpine AS frontend-build
 WORKDIR /frontend
-ARG VERSION
-ARG BASE_PATH=""
 
 COPY web/package*.json ./
 RUN npm ci && npm cache clean --force
 
 COPY web/ ./
-RUN env PUBLIC_VERSION=${VERSION} PUBLIC_API_URL=${BASE_PATH} BASE_PATH=${BASE_PATH}/web npm run build
 
-FROM ghcr.io/astral-sh/uv:python3.13-trixie-slim
 ARG VERSION
 ARG BASE_PATH=""
-LABEL author="github.com/maxdorninger"
-LABEL version=${VERSION}
-LABEL description="Docker image for MediaManager"
+RUN env PUBLIC_VERSION=${VERSION} PUBLIC_API_URL=${BASE_PATH} BASE_PATH=${BASE_PATH}/web npm run build
 
-ENV PUBLIC_VERSION=${VERSION} \
-    CONFIG_DIR="/app/config"\
-    BASE_PATH=${BASE_PATH}\
-    FRONTEND_FILES_DIR="/app/web/build"
-
-
-WORKDIR /app
+FROM ghcr.io/astral-sh/uv:python3.13-trixie-slim AS base 
 
 RUN apt-get update && \
     apt-get install -y ca-certificates bash libtorrent21 gcc bc locales postgresql media-types mailcap curl gzip unzip tar 7zip bzip2 unar && \
@@ -34,8 +22,24 @@ RUN locale-gen
 ENV LANG=en_US.UTF-8
 ENV LC_ALL=en_US.UTF-8
 
+FROM base AS dependencies
+WORKDIR /app
+
 COPY pyproject.toml uv.lock ./
-RUN uv sync --locked
+RUN --mount=type=cache,target=/root/.cache/uv \
+    uv sync --locked
+
+FROM dependencies AS app
+ARG VERSION
+ARG BASE_PATH=""
+LABEL author="github.com/maxdorninger"
+LABEL version=${VERSION}
+LABEL description="Docker image for MediaManager"
+
+ENV PUBLIC_VERSION=${VERSION} \
+    CONFIG_DIR="/app/config"\
+    BASE_PATH=${BASE_PATH}\
+    FRONTEND_FILES_DIR="/app/web/build"
 
 COPY --chmod=755 mediamanager-startup.sh .
 COPY config.example.toml .
@@ -43,8 +47,9 @@ COPY media_manager ./media_manager
 COPY alembic ./alembic
 COPY alembic.ini .
 
-COPY --from=frontend-build /frontend/build /app/web/build
-
 HEALTHCHECK CMD curl -f http://localhost:8000${BASE_PATH}/api/v1/health || exit 1
 EXPOSE 8000
 CMD ["/app/mediamanager-startup.sh"]
+
+FROM app AS production
+COPY --from=frontend-build /frontend/build /app/web/build