...

Dockerfile

@@ -1,7 +1,5 @@
 ARG PYTHON_VERSION=3.12
-ARG BASE=python:${PYTHON_VERSION}-slim-bookworm
-
-FROM ${BASE}
+FROM python:${PYTHON_VERSION}-slim-bookworm
 
 MAINTAINER Ebbok2Audiobook version: 25.12.10
 
@@ -18,30 +16,48 @@ ENV DEBIAN_FRONTEND=noninteractive \
 WORKDIR /app
 COPY . .
 
-# OS deps (no explicit Qt/X11/GTK – Calibre brings its own Qt in /opt/calibre)
+# ----------------------------------------
+# Install ONLY required system packages
+# ----------------------------------------
 RUN apt-get update && \
     apt-get install -y --no-install-recommends --allow-change-held-packages \
         gcc g++ make python3-dev pkg-config git wget bash xz-utils \
+        # Tiny OpenGL platform libs (required for Calibre installer)
+        libegl1 libopengl0 libgl1 \
+        # User-supplied tools
         ${DOCKER_PROGRAMS_STR} \
         tesseract-ocr-${ISO3_LANG} || true && \
     rm -rf /var/lib/apt/lists/*
 
-RUN chmod +x ebook2audiobook.sh
-RUN ./ebook2audiobook.sh --script_mode build_docker --docker_device "${DOCKER_DEVICE_STR}"
+# ----------------------------------------
+# Build Python dependencies via your script
+# ----------------------------------------
+RUN chmod +x ebook2audiobook.sh && \
+    ./ebook2audiobook.sh --script_mode build_docker --docker_device "${DOCKER_DEVICE_STR}"
 
-# Install Calibre (CLI tools incl. ebook-convert; its own Qt lives in /opt/calibre)
+# ----------------------------------------
+# Install Calibre (CLI only, GUI unused)
+# ----------------------------------------
 RUN wget -nv "$CALIBRE_INSTALLER_URL" -O /tmp/calibre.sh && \
     bash /tmp/calibre.sh && rm -f /tmp/calibre.sh
 
-# Cleanup to shrink image
+# ----------------------------------------
+# Clean up everything not needed at runtime
+# ----------------------------------------
 RUN set -eux; \
+    # Remove Python caches
     find /usr /app -type d -name "__pycache__" -exec rm -rf {} +; \
+    # Remove unnecessary OS documentation & translations
     rm -rf /usr/share/doc/* /usr/share/man/* /usr/share/locale/*; \
+    # Remove icons, fonts, fontconfig cache
     rm -rf /usr/share/icons/* /usr/share/fonts/* /var/cache/fontconfig/*; \
+    # Remove unused Calibre docs
     rm -rf /opt/calibre/*.txt /opt/calibre/*.md /opt/calibre/resources/man-pages || true; \
+    # Purge build tools
     apt-get purge -y --auto-remove gcc g++ make python3-dev pkg-config git; \
     apt-get clean; \
     rm -rf /var/lib/apt/lists/* /tmp/* /root/.cache
 
 EXPOSE 7860
+
 ENTRYPOINT ["python3", "app.py", "--script_mode", "full_docker"]