Refactor Dockerfile for improved readability and maintainability; streamline environment variable and command formatting

Dockerfile

@@ -1,21 +1,21 @@
 FROM python:3.9-slim
 
 # Set environment variables
-ENV PYTHONUNBUFFERED=1 `
-    PYTHONDONTWRITEBYTECODE=1 `
+ENV PYTHONUNBUFFERED=1 \
+    PYTHONDONTWRITEBYTECODE=1 \
     MPLCONFIGDIR=/tmp/matplotlib
 
 WORKDIR /app
 
 # Install system dependencies
-RUN apt-get update && `
-    apt-get install -y --no-install-recommends `
-    build-essential `
-    curl `
-    git `
-    ffmpeg `
-    libsndfile1 `
-    && apt-get clean `
+RUN apt-get update && \
+    apt-get install -y --no-install-recommends \
+    build-essential \
+    curl \
+    git \
+    ffmpeg \
+    libsndfile1 \
+    && apt-get clean \
     && rm -rf /var/lib/apt/lists/*
 
 # Create necessary directories
@@ -25,17 +25,26 @@ RUN mkdir -p /app/tmp_model /tmp/matplotlib
 COPY requirements.txt .
 
 # Install Python dependencies with specific order for compatibility
-RUN pip install --no-cache-dir --upgrade pip && `
-    pip install --no-cache-dir torch==2.0.1 torchaudio==2.0.2 && `
-    pip install --no-cache-dir -r requirements.txt && `
+RUN pip install --no-cache-dir --upgrade pip && \
+    pip install --no-cache-dir torch==2.0.1 torchaudio==2.0.2 && \
+    pip install --no-cache-dir -r requirements.txt && \
     pip install --no-cache-dir git+https://github.com/speechbrain/speechbrain.git@v0.5.14
 
 # Copy source code
 COPY src/ ./src/
 
 # Set up Streamlit configuration
-RUN mkdir -p .streamlit && `
-    echo "[server]`nport = 8501`naddress = \"0.0.0.0\"`nheadless = true`n`n[browser]`ngatherUsageStats = false`n`n[runner]`nfastReruns = true" > ./.streamlit/config.toml
+RUN mkdir -p .streamlit
+RUN echo "[server]" > ./.streamlit/config.toml && \
+    echo "port = 8501" >> ./.streamlit/config.toml && \
+    echo "address = \"0.0.0.0\"" >> ./.streamlit/config.toml && \
+    echo "headless = true" >> ./.streamlit/config.toml && \
+    echo "" >> ./.streamlit/config.toml && \
+    echo "[browser]" >> ./.streamlit/config.toml && \
+    echo "gatherUsageStats = false" >> ./.streamlit/config.toml && \
+    echo "" >> ./.streamlit/config.toml && \
+    echo "[runner]" >> ./.streamlit/config.toml && \
+    echo "fastReruns = true" >> ./.streamlit/config.toml
 
 # Expose port
 EXPOSE 8501