Update Dockerfile

Dockerfile

@@ -24,6 +24,9 @@ RUN wget https://bootstrap.pypa.io/get-pip.py && \
     rm get-pip.py && \
     pip install --no-cache-dir --upgrade pip setuptools wheel
 
+# Explicitly install regex
+RUN pip install --no-cache-dir regex --force-reinstall
+
 # Create and switch to a non-root user
 RUN useradd -m -u 1000 user
 USER user
@@ -35,7 +38,7 @@ WORKDIR /home/user/app
 # Clone the GitHub repository
 RUN git clone https://github.com/DrewThomasson/ebook2audiobook.git /home/user/app
 
-# Install Python dependencies with isolated builds
+# Install Python dependencies
 RUN pip install --no-cache-dir --upgrade pip setuptools wheel && \
     pip install --no-cache-dir --use-pep517 -r requirements.txt