An issue involving node.js OOM happened (#12690)

### What problem does this PR solve?
The Node.js memory issue occurred due to JavaScript heap exhaustion
during the Vite build process sometimes. Here's what happened:
export NODE_OPTIONS="--max-old-space-size=4096" && \
Root Cause:
The Node.js memory issue occurred due to JavaScript heap exhaustion
during the Vite build process sometimes. Here's what happened:

Root Cause:

When building the web frontend with npm run build, Vite needs to bundle,
transform, and optimize all JavaScript/TypeScript code
Node.js has a default maximum heap size of ~2GB
The RAGFlow web application is large enough that the build process
exceeded this limit
This triggered garbage collection failures ("Ineffective mark-compacts
near heap limit") and eventually crashed with exit code 134 (SIGABRT)

The solution I attempted:
I did not find a simple method to reduce the use of memory for node.js,
so I added NODE_OPTIONS=--max-old-space-size=4096 to allocate 4GB heap
memory for Node.js during the build.

### Type of change
- Bug Fix (non-breaking change which fixes an issue)

=> ERROR [builder 6/8] RUN --mount=type=cache,id=ragflow_npm,target=/ro
53.3s
[builder 6/8] RUN
--mount=type=cache,id=ragflow_npm,target=/root/.npm,sharing=locked cd
web && npm install && npm run build:
4.551
4.551 > prepare
4.551 > cd .. && husky web/.husky
4.551
4.810 .git can't be found
4.833 added 7 packages in 4s
4.833
4.833 499 packages are looking for funding
4.833 run npm fund for details
5.206
5.206 > build
5.206 > vite build --mode production
5.206
5.939 vite v7.3.0 building client environment for production...
6.169 transforming...
6.472
6.472 WARN
6.472
6.472
6.472 WARN warn - As of Tailwind CSS v3.3, the @tailwindcss/line-clamp
plugin is now included by default.
6.472
6.472
6.472 WARN warn - Remove it from the plugins array in your configuration
to eliminate this warning.
6.472
53.14
53.14 <--- Last few GCs --->
53.14
53.14 [41:0x55f82d0] 47673 ms: Scavenge (reduce) 2041.5 (2086.0) ->
2038.7 (2079.7) MB, 6.11 / 0.00 ms (average mu = 0.330, current mu =
0.319) allocation failure;
53.14 [41:0x55f82d0] 47727 ms: Scavenge (reduce) 2039.4 (2079.7) ->
2038.7 (2080.2) MB, 5.34 / 0.00 ms (average mu = 0.330, current mu =
0.319) allocation failure;
53.14 [41:0x55f82d0] 47809 ms: Scavenge (reduce) 2039.6 (2080.2) ->
2038.7 (2080.2) MB, 4.59 / 0.00 ms (average mu = 0.330, current mu =
0.319) allocation failure;
53.14
53.14
53.14 <--- JS stacktrace --->
53.14
53.14 FATAL ERROR: Ineffective mark-compacts near heap limit Allocation
failed - JavaScript heap out of memory
53.14 ----- Native stack trace -----
53.14
53.14 1: 0xb76db1 node::OOMErrorHandler(char const*, v8::OOMDetails
const&) [node]
53.14 2: 0xee62f0 v8::Utils::ReportOOMFailure(v8::internal::Isolate*,
char const*, v8::OOMDetails const&) [node]
53.14 3: 0xee65d7
v8::internal::V8::FatalProcessOutOfMemory(v8::internal::Isolate*, char
const*, v8::OOMDetails const&) [node]
53.14 4: 0x10f82d5 [node]
53.14 5: 0x10f8864
v8::internal::Heap::RecomputeLimits(v8::internal::GarbageCollector)
[node]
53.14 6: 0x110f754
v8::internal::Heap::PerformGarbageCollection(v8::internal::GarbageCollector,
v8::internal::GarbageCollectionReason, char const*) [node]
53.14 7: 0x110ff6c
v8::internal::Heap::CollectGarbage(v8::internal::AllocationSpace,
v8::internal::GarbageCollectionReason, v8::GCCallbackFlags) [node]
53.14 8: 0x11120ca v8::internal::Heap::HandleGCRequest() [node]
53.14 9: 0x107d737 v8::internal::StackGuard::HandleInterrupts() [node]
53.15 10: 0x151fb9a v8::internal::Runtime_StackGuard(int, unsigned
long*, v8::internal::Isolate*) [node]
53.15 11: 0x1959ef6 [node]
53.22 Aborted

[+] up 0/1
⠙ Image docker-ragflow Building 58.0s
Dockerfile:161

160 | COPY docs docs

161 | >>> RUN
--mount=type=cache,id=ragflow_npm,target=/root/.npm,sharing=locked \

162 | >>> cd web && npm install && npm run build

163 |

failed to solve: process "/bin/bash -c cd web && npm install && npm run
build" did not complete successfully: exit code: 134

View build details:
docker-desktop://dashboard/build/default/default/j68n2ke32cd8bte4y8fs471au

Dockerfile

@@ -159,6 +159,7 @@ RUN --mount=type=cache,id=ragflow_uv,target=/root/.cache/uv,sharing=locked \
 COPY web web
 COPY docs docs
 RUN --mount=type=cache,id=ragflow_npm,target=/root/.npm,sharing=locked \
+    export NODE_OPTIONS="--max-old-space-size=4096" && \
     cd web && npm install && npm run build
 
 COPY .git /ragflow/.git