Version 3.0.2 full expirimental DCT support, jpegio for better jpg manipulation, etc.

Dockerfile

@@ -12,11 +12,13 @@ ENV PYTHONUNBUFFERED=1
 ENV PIP_ROOT_USER_ACTION=ignore
 
 # Install system dependencies
+# NOTE: libjpeg-dev is required for jpegio compilation
 RUN apt-get update && apt-get install -y --no-install-recommends \
     gcc \
     libc-dev \
     libffi-dev \
     libzbar0 \
+    libjpeg-dev \
     && rm -rf /var/lib/apt/lists/*
 
 # ============================================================================
@@ -31,8 +33,10 @@ COPY pyproject.toml README.md ./
 COPY src/ src/
 COPY data/ data/
 
-# Install the package with web extras
-RUN pip install --no-cache-dir ".[web]"
+# Install build dependencies for jpegio, then install the package
+# jpegio requires Cython and numpy to compile
+RUN pip install --no-cache-dir cython numpy && \
+    pip install --no-cache-dir ".[web]"
 
 # ============================================================================
 # Production stage - Web UI
@@ -78,11 +82,14 @@ FROM base as api
 
 WORKDIR /app
 
-# Install API extras
+# Install API extras (includes DCT dependencies)
 COPY pyproject.toml README.md ./
 COPY src/ src/
 COPY data/ data/
-RUN pip install --no-cache-dir ".[api]"
+
+# Install build dependencies for jpegio, then install the package
+RUN pip install --no-cache-dir cython numpy && \
+    pip install --no-cache-dir ".[api]"
 
 # Copy API files
 COPY frontends/api/ frontends/api/
@@ -116,7 +123,10 @@ WORKDIR /app
 COPY pyproject.toml README.md ./
 COPY src/ src/
 COPY data/ data/
-RUN pip install --no-cache-dir ".[cli]"
+
+# Install build dependencies for jpegio (if dct extras needed), then install
+RUN pip install --no-cache-dir cython numpy && \
+    pip install --no-cache-dir ".[cli,dct]"
 
 # Copy CLI files
 COPY frontends/cli/ frontends/cli/