Update Dockerfile

Dockerfile

@@ -2,9 +2,9 @@ FROM python:3.9-slim
 
 WORKDIR /code
 
-# Install system dependencies including gcc and ta-lib
+# Install system dependencies and TA-Lib
 RUN apt-get update && \
-    apt-get install -y gcc wget make git && \
+    apt-get install -y gcc wget make && \
     wget http://prdownloads.sourceforge.net/ta-lib/ta-lib-0.4.0-src.tar.gz && \
     tar -xvzf ta-lib-0.4.0-src.tar.gz && \
     cd ta-lib/ && \
@@ -12,10 +12,11 @@ RUN apt-get update && \
     make && \
     make install && \
     cd .. && \
-    rm -rf ta-lib-0.4.0-src.tar.gz ta-lib/
+    rm -rf ta-lib-0.4.0-src.tar.gz ta-lib/ && \
+    rm -rf /var/lib/apt/lists/*
 
-# Install Python packages
 COPY ./requirements.txt /code/requirements.txt
+
 RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
 
 COPY . /code