[server-ce] run npm install on minimal set of source files (#31111)

GitOrigin-RevId: 389acfb3e23533f5361f2cc0274b440d785a7179

server-ce/Dockerfile

@@ -7,27 +7,25 @@ FROM $OVERLEAF_BASE_TAG
 
 WORKDIR /overleaf
 
-# Add required source files
-# -------------------------
-ADD server-ce/genScript.js /overleaf/genScript.js
-ADD server-ce/services.js /overleaf/services.js
-ADD package.json package-lock.json /overleaf/
-ADD libraries/ /overleaf/libraries/
-ADD services/ /overleaf/services/
-ADD tools/migrations/ /overleaf/tools/migrations/
-
-# Add npm patches
-# -----------------------
-ADD patches/ /overleaf/patches
+# Add required source files for npm install
+# -----------------------------------------
+COPY --parents libraries/*/package.json patches/ services/*/package.json tools/migrations/ package.json package-lock.json /overleaf/
+COPY server-ce/genScript.js server-ce/services.js /overleaf/
 
-# Install npm dependencies and build webpack assets
+# Install npm dependencies
 # ------------------------
 RUN --mount=type=cache,target=/root/.cache \
     --mount=type=cache,target=/root/.npm \
     --mount=type=cache,target=/overleaf/services/web/node_modules/.cache,id=server-ce-webpack-cache \
-    --mount=type=tmpfs,target=/tmp true \
-&&  node genScript install | bash \
-&&  node genScript compile | bash
+    --mount=type=tmpfs,target=/tmp node genScript install | bash
+
+# Add the actual source files
+# ---------------------------
+COPY --parents libraries/ services/ tools/migrations/ /overleaf/
+RUN --mount=type=cache,target=/root/.cache \
+    --mount=type=cache,target=/root/.npm \
+    --mount=type=cache,target=/overleaf/services/web/node_modules/.cache,id=server-ce-webpack-cache \
+    --mount=type=tmpfs,target=/tmp node genScript compile | bash
 
 # Copy runit service startup scripts to its location
 # --------------------------------------------------