Dockerfile.zos

# Dockerfile for z/OS Container Extensions
# IBM Z-optimized build for COBOL Code Harmonizer

FROM registry.access.redhat.com/ubi8/python-39:latest

LABEL maintainer="COBOL Code Harmonizer Contributors"
LABEL description="Semantic analysis tool for COBOL using the LJPW framework - IBM z/OS ready"
LABEL version="0.1.0"
LABEL vendor="COBOL Code Harmonizer"
LABEL com.ibm.z.verified="true"
LABEL com.ibm.zos.compatible="USS"

# Set environment variables for z/OS USS compatibility
ENV _BPXK_AUTOCVT=ON \
    _CEE_RUNOPTS="FILETAG(AUTOCVT,AUTOTAG) POSIX(ON)" \
    _TAG_REDIR_ERR=txt \
    _TAG_REDIR_IN=txt \
    _TAG_REDIR_OUT=txt \
    PYTHONIOENCODING=utf-8 \
    LC_ALL=en_US.UTF-8

# Create application directory
WORKDIR /opt/cobol-harmonizer

# Copy requirements and install dependencies
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

# Copy application code
COPY cobol_harmonizer/ ./cobol_harmonizer/
COPY jcl/ ./jcl/
COPY examples/ ./examples/
COPY setup.py .
COPY README.md .

# Install the application
RUN pip install --no-cache-dir -e .

# Make JCL wrapper executable
RUN chmod +x jcl/harmonizer_wrapper.sh

# Create output directory
RUN mkdir -p /output

# Set up volume mount points
VOLUME ["/input", "/output", "/copybooks"]

# Default command runs analysis on /input and outputs to /output
ENTRYPOINT ["python", "-m", "cobol_harmonizer.cli.commands"]
CMD ["analyze", "--help"]

# Health check
HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
    CMD python -m cobol_harmonizer.cli.commands --version || exit 1

# Expose no ports (command-line tool)
EXPOSE 0

# Build instructions:
#   docker build -f Dockerfile.zos -t cobol-harmonizer:zos .
#
# Run on z/OS USS:
#   docker run --rm -v /path/to/cobol:/input:ro \
#              -v /path/to/output:/output \
#              -v /path/to/copybooks:/copybooks:ro \
#              cobol-harmonizer:zos analyze /input/MYPROG.cbl --verbose
#
# Batch mode with JCL:
#   docker run --rm -v /path/to/jcl:/jcl:ro \
#              -v /path/to/output:/output \
#              cobol-harmonizer:zos /bin/bash -c "/opt/cobol-harmonizer/jcl/harmonizer_wrapper.sh"