Update Dockerfile

Dockerfile

@@ -1,8 +1,6 @@
 FROM python:3.10-slim
 
-# 1. Install system dependencies required for compiling
-# 'git' is needed to download detectron2 source
-# 'build-essential' provides the compilers (gcc/g++)
+# 1. Install system dependencies
 RUN apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     wget \
@@ -26,13 +24,11 @@ COPY --chown=user requirements.txt .
 RUN pip install --no-cache-dir --upgrade pip
 
 # 5. Install PyTorch (CPU Version) FIRST
-# We explicitly install the CPU version to keep the image small and compatible.
-# Detectron2 requires PyTorch to be installed before it can build.
 RUN pip install --no-cache-dir torch torchvision --index-url https://download.pytorch.org/whl/cpu
 
 # 6. Install Detectron2 from Source (Official Facebook Repo)
-# Since we installed 'build-essential' and 'torch', this will compile successfully.
-RUN pip install --no-cache-dir "git+https://github.com/facebookresearch/detectron2.git"
+# FIX: Added '--no-build-isolation' so it can see the installed PyTorch
+RUN pip install --no-cache-dir --no-build-isolation "git+https://github.com/facebookresearch/detectron2.git"
 
 # 7. Install the rest of the dependencies
 RUN pip install --no-cache-dir -r requirements.txt