build: Refine server build steps

Dockerfile

@@ -1,16 +1,19 @@
-FROM node:22-alpine AS server-dependencies
+# Stage 1: Server build
+FROM node:22-alpine AS server
 
 RUN apk -U upgrade \
   && apk add build-base python3 --no-cache
 
 WORKDIR /app
 
-COPY server/package.json server/package-lock.json server/requirements.txt ./
-COPY server/patches ./patches
+COPY server .
 
 RUN npm install npm --global \
-  && npm install --omit=dev
+  && npm install \
+  && npm run build \
+  && npm prune --production
 
+# Stage 2: Client build
 FROM node:22 AS client
 
 WORKDIR /app
@@ -18,10 +21,10 @@ WORKDIR /app
 COPY client .
 
 RUN npm install npm --global \
-  && npm install --omit=dev
-
-RUN DISABLE_ESLINT_PLUGIN=true npm run build
+  && npm install --omit=dev \
+  && DISABLE_ESLINT_PLUGIN=true npm run build
 
+# Stage 3: Final image
 FROM node:22-alpine
 
 RUN apk -U upgrade \
@@ -31,18 +34,20 @@ RUN apk -U upgrade \
 USER node
 WORKDIR /app
 
-COPY --chown=node:node server .
+COPY --chown=node:node LICENSE.md .
+COPY --chown=node:node ["LICENSES/PLANKA Community License DE.md", "LICENSE_DE.md"]
+
+COPY --from=server --chown=node:node /app/node_modules node_modules
+COPY --from=server --chown=node:node /app/dist .
+
+COPY --from=client --chown=node:node /app/dist public
+COPY --from=client --chown=node:node /app/dist/index.html views
 
 RUN python3 -m venv .venv \
   && .venv/bin/pip3 install -r requirements.txt --no-cache-dir \
   && mv .env.sample .env \
   && npm config set update-notifier false
 
-COPY --from=server-dependencies --chown=node:node /app/node_modules node_modules
-
-COPY --from=client --chown=node:node /app/dist public
-COPY --from=client --chown=node:node /app/dist/index.html views
-
 VOLUME /app/public/favicons
 VOLUME /app/public/user-avatars
 VOLUME /app/public/background-images