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3f45a4e136f7059c95dd838810e673569075ae35
ccextractor/docker/Dockerfile
Carlos Fernandez 3f45a4e136 fix(docker): Rewrite Dockerfile to fix broken builds 
Fixes #1550 - Docker builds were broken after PR #1535 switched from
vendored GPAC to system GPAC.

Changes:
- Switch from Alpine to Debian Bookworm (Alpine's musl libc has issues
  with Rust bindgen's libclang dynamic loading)
- Support three build variants via BUILD_TYPE argument:
  - minimal: No OCR support
  - ocr (default): Tesseract OCR for bitmap subtitles
  - hardsubx: OCR + FFmpeg for burned-in subtitle extraction
- Support dual source modes via USE_LOCAL_SOURCE argument:
  - 0 (default): Clone from GitHub (standalone Dockerfile)
  - 1: Use local source (faster for developers)
- Add .dockerignore to exclude build artifacts (~2.7GB -> ~900KB context)
- Update README.md with comprehensive build instructions

Tested all three variants successfully:
- minimal: ~130MB image
- ocr: ~215MB image
- hardsubx: ~610MB image

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2025-12-20 17:27:42 +01:00

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# CCExtractor Docker Build
#
# Build variants via BUILD_TYPE argument:
# - minimal: Basic CCExtractor without OCR
# - ocr: CCExtractor with OCR support (default)
# - hardsubx: CCExtractor with burned-in subtitle extraction (requires FFmpeg)
#
# Source options via USE_LOCAL_SOURCE argument:
# - 0 (default): Clone from GitHub (standalone Dockerfile usage)
# - 1: Use local source (when building from cloned repo)
#
# Build examples:
#
# # Standalone (just the Dockerfile, clones from GitHub):
# docker build -t ccextractor docker/
# docker build --build-arg BUILD_TYPE=hardsubx -t ccextractor docker/
#
# # From cloned repository (faster, uses local source):
# docker build --build-arg USE_LOCAL_SOURCE=1 -f docker/Dockerfile -t ccextractor .
# docker build --build-arg USE_LOCAL_SOURCE=1 --build-arg BUILD_TYPE=minimal -f docker/Dockerfile -t ccextractor .
ARG DEBIAN_VERSION=bookworm-slim
FROM debian:${DEBIAN_VERSION} AS base
FROM base AS builder
# Build arguments
ARG BUILD_TYPE=ocr
ARG USE_LOCAL_SOURCE=0
# BUILD_TYPE: minimal, ocr, hardsubx
# USE_LOCAL_SOURCE: 0 = git clone, 1 = copy local source
# Avoid interactive prompts during package installation
ENV DEBIAN_FRONTEND=noninteractive
# Install base build dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
git \
curl \
ca-certificates \
gcc \
g++ \
cmake \
make \
pkg-config \
bash \
zlib1g-dev \
libpng-dev \
libjpeg-dev \
libssl-dev \
libfreetype-dev \
libxml2-dev \
libcurl4-gnutls-dev \
clang \
libclang-dev \
&& rm -rf /var/lib/apt/lists/*
# Install Rust toolchain
RUN curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --default-toolchain stable
ENV PATH="/root/.cargo/bin:${PATH}"
# Install OCR dependencies (for ocr and hardsubx builds)
RUN if [ "$BUILD_TYPE" = "ocr" ] || [ "$BUILD_TYPE" = "hardsubx" ]; then \
apt-get update && apt-get install -y --no-install-recommends \
tesseract-ocr \
libtesseract-dev \
libleptonica-dev \
&& rm -rf /var/lib/apt/lists/*; \
fi
# Install FFmpeg dependencies (for hardsubx build)
RUN if [ "$BUILD_TYPE" = "hardsubx" ]; then \
apt-get update && apt-get install -y --no-install-recommends \
libavcodec-dev \
libavformat-dev \
libavutil-dev \
libswscale-dev \
libswresample-dev \
libavfilter-dev \
libavdevice-dev \
&& rm -rf /var/lib/apt/lists/*; \
fi
# Build and install GPAC library
WORKDIR /root
RUN git clone -b v2.4.0 --depth 1 https://github.com/gpac/gpac
WORKDIR /root/gpac
RUN ./configure && make -j$(nproc) lib && make install-lib && ldconfig
WORKDIR /root
RUN rm -rf /root/gpac
# Get CCExtractor source (either clone or copy based on USE_LOCAL_SOURCE)
WORKDIR /root
# First, copy local source if provided (will be empty dir if building standalone)
COPY . /root/ccextractor-local/
# Then get source: use local copy if USE_LOCAL_SOURCE=1 and source exists,
# otherwise clone from GitHub
RUN if [ "$USE_LOCAL_SOURCE" = "1" ] && [ -f /root/ccextractor-local/src/ccextractor.c ]; then \
echo "Using local source"; \
mv /root/ccextractor-local /root/ccextractor; \
else \
echo "Cloning from GitHub"; \
rm -rf /root/ccextractor-local; \
git clone --depth 1 https://github.com/CCExtractor/ccextractor.git /root/ccextractor; \
fi
WORKDIR /root/ccextractor/linux
# Generate build info
RUN ./pre-build.sh
# Build Rust library with appropriate features
RUN if [ "$BUILD_TYPE" = "hardsubx" ]; then \
cd ../src/rust && \
CARGO_TARGET_DIR=../../linux/rust cargo build --release --features hardsubx_ocr; \
else \
cd ../src/rust && \
CARGO_TARGET_DIR=../../linux/rust cargo build --release; \
fi
RUN cp rust/release/libccx_rust.a ./libccx_rust.a
# Compile CCExtractor
RUN if [ "$BUILD_TYPE" = "minimal" ]; then \
BLD_FLAGS="-std=gnu99 -Wno-write-strings -Wno-pointer-sign -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DFT2_BUILD_LIBRARY -DGPAC_DISABLE_VTT -DGPAC_DISABLE_OD_DUMP -DGPAC_DISABLE_REMOTERY -DNO_GZIP -DGPAC_64_BITS"; \
BLD_INCLUDE="-I../src -I../src/lib_ccx/ -I /usr/include/gpac/ -I../src/thirdparty/libpng -I../src/thirdparty/zlib -I../src/lib_ccx/zvbi -I../src/thirdparty/lib_hash -I../src/thirdparty -I../src/thirdparty/freetype/include"; \
BLD_LINKER="-lm -Wl,--allow-multiple-definition -lpthread -ldl -lgpac ./libccx_rust.a"; \
elif [ "$BUILD_TYPE" = "hardsubx" ]; then \
BLD_FLAGS="-std=gnu99 -Wno-write-strings -Wno-pointer-sign -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DENABLE_OCR -DENABLE_HARDSUBX -DFT2_BUILD_LIBRARY -DGPAC_DISABLE_VTT -DGPAC_DISABLE_OD_DUMP -DGPAC_DISABLE_REMOTERY -DNO_GZIP -DGPAC_64_BITS"; \
BLD_INCLUDE="-I../src -I /usr/include/leptonica/ -I /usr/include/tesseract/ -I../src/lib_ccx/ -I /usr/include/gpac/ -I../src/thirdparty/libpng -I../src/thirdparty/zlib -I../src/lib_ccx/zvbi -I../src/thirdparty/lib_hash -I../src/thirdparty -I../src/thirdparty/freetype/include"; \
BLD_LINKER="-lm -Wl,--allow-multiple-definition -ltesseract -lleptonica -lpthread -ldl -lgpac -lswscale -lavutil -lavformat -lavcodec -lavfilter -lswresample ./libccx_rust.a"; \
else \
BLD_FLAGS="-std=gnu99 -Wno-write-strings -Wno-pointer-sign -D_FILE_OFFSET_BITS=64 -DVERSION_FILE_PRESENT -DENABLE_OCR -DFT2_BUILD_LIBRARY -DGPAC_DISABLE_VTT -DGPAC_DISABLE_OD_DUMP -DGPAC_DISABLE_REMOTERY -DNO_GZIP -DGPAC_64_BITS"; \
BLD_INCLUDE="-I../src -I /usr/include/leptonica/ -I /usr/include/tesseract/ -I../src/lib_ccx/ -I /usr/include/gpac/ -I../src/thirdparty/libpng -I../src/thirdparty/zlib -I../src/lib_ccx/zvbi -I../src/thirdparty/lib_hash -I../src/thirdparty -I../src/thirdparty/freetype/include"; \
BLD_LINKER="-lm -Wl,--allow-multiple-definition -ltesseract -lleptonica -lpthread -ldl -lgpac ./libccx_rust.a"; \
fi && \
SRC_LIBPNG="$(find ../src/thirdparty/libpng/ -name '*.c')" && \
SRC_ZLIB="$(find ../src/thirdparty/zlib/ -name '*.c')" && \
SRC_CCX="$(find ../src/lib_ccx/ -name '*.c')" && \
SRC_GPAC="$(find /usr/include/gpac/ -name '*.c' 2>/dev/null || true)" && \
SRC_HASH="$(find ../src/thirdparty/lib_hash/ -name '*.c')" && \
SRC_UTF8PROC="../src/thirdparty/utf8proc/utf8proc.c" && \
SRC_FREETYPE="../src/thirdparty/freetype/autofit/autofit.c \
../src/thirdparty/freetype/base/ftbase.c \
../src/thirdparty/freetype/base/ftbbox.c \
../src/thirdparty/freetype/base/ftbdf.c \
../src/thirdparty/freetype/base/ftbitmap.c \
../src/thirdparty/freetype/base/ftcid.c \
../src/thirdparty/freetype/base/ftfntfmt.c \
../src/thirdparty/freetype/base/ftfstype.c \
../src/thirdparty/freetype/base/ftgasp.c \
../src/thirdparty/freetype/base/ftglyph.c \
../src/thirdparty/freetype/base/ftgxval.c \
../src/thirdparty/freetype/base/ftinit.c \
../src/thirdparty/freetype/base/ftlcdfil.c \
../src/thirdparty/freetype/base/ftmm.c \
../src/thirdparty/freetype/base/ftotval.c \
../src/thirdparty/freetype/base/ftpatent.c \
../src/thirdparty/freetype/base/ftpfr.c \
../src/thirdparty/freetype/base/ftstroke.c \
../src/thirdparty/freetype/base/ftsynth.c \
../src/thirdparty/freetype/base/ftsystem.c \
../src/thirdparty/freetype/base/fttype1.c \
../src/thirdparty/freetype/base/ftwinfnt.c \
../src/thirdparty/freetype/bdf/bdf.c \
../src/thirdparty/freetype/bzip2/ftbzip2.c \
../src/thirdparty/freetype/cache/ftcache.c \
../src/thirdparty/freetype/cff/cff.c \
../src/thirdparty/freetype/cid/type1cid.c \
../src/thirdparty/freetype/gzip/ftgzip.c \
../src/thirdparty/freetype/lzw/ftlzw.c \
../src/thirdparty/freetype/pcf/pcf.c \
../src/thirdparty/freetype/pfr/pfr.c \
../src/thirdparty/freetype/psaux/psaux.c \
../src/thirdparty/freetype/pshinter/pshinter.c \
../src/thirdparty/freetype/psnames/psnames.c \
../src/thirdparty/freetype/raster/raster.c \
../src/thirdparty/freetype/sfnt/sfnt.c \
../src/thirdparty/freetype/smooth/smooth.c \
../src/thirdparty/freetype/truetype/truetype.c \
../src/thirdparty/freetype/type1/type1.c \
../src/thirdparty/freetype/type42/type42.c \
../src/thirdparty/freetype/winfonts/winfnt.c" && \
BLD_SOURCES="../src/ccextractor.c $SRC_CCX $SRC_GPAC $SRC_ZLIB $SRC_LIBPNG $SRC_HASH $SRC_UTF8PROC $SRC_FREETYPE" && \
gcc $BLD_FLAGS $BLD_INCLUDE -o ccextractor $BLD_SOURCES $BLD_LINKER
# Copy binary to known location
RUN cp /root/ccextractor/linux/ccextractor /ccextractor
# Final minimal image
FROM base AS final
ARG BUILD_TYPE=ocr
# Avoid interactive prompts
ENV DEBIAN_FRONTEND=noninteractive
# Install runtime dependencies based on build type
RUN apt-get update && apt-get install -y --no-install-recommends \
libpng16-16 \
libjpeg62-turbo \
zlib1g \
libssl3 \
libcurl4 \
&& rm -rf /var/lib/apt/lists/*
# OCR runtime dependencies
RUN if [ "$BUILD_TYPE" = "ocr" ] || [ "$BUILD_TYPE" = "hardsubx" ]; then \
apt-get update && apt-get install -y --no-install-recommends \
tesseract-ocr \
liblept5 \
&& rm -rf /var/lib/apt/lists/*; \
fi
# HardSubX runtime dependencies
RUN if [ "$BUILD_TYPE" = "hardsubx" ]; then \
apt-get update && apt-get install -y --no-install-recommends \
libavcodec59 \
libavformat59 \
libavutil57 \
libswscale6 \
libswresample4 \
libavfilter8 \
libavdevice59 \
&& rm -rf /var/lib/apt/lists/*; \
fi
# Copy GPAC library from builder
COPY --from=builder /usr/local/lib/libgpac.so* /usr/local/lib/
# Update library cache
RUN ldconfig
# Copy CCExtractor binary
COPY --from=builder /ccextractor /ccextractor
ENTRYPOINT ["/ccextractor"]
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