Update Dockerfile

Dockerfile

@@ -9,7 +9,7 @@ COPY . .
 
 # 必要な依存関係（cmake, OpenCV, dlibなど）をインストール
 RUN apt-get update && \
-    apt-get install -y cmake && \
+    apt-get install -y cmake g++ build-essential && \
     pip install --no-cache-dir --upgrade pip && \
     pip install --no-cache-dir --find-links https://github.com/trolltroll/python-dlib-wheels/releases/tag/v19.24.2 dlib==19.24.2 && \
     pip install --no-cache-dir --upgrade -r /app/requirements.txt