Dockerfile

# 1. Start from the official CMSSW base image
FROM gitlab-registry.cern.ch/cms-cloud/cmssw-docker-opendata/cmssw_10_6_30-slc7_amd64_gcc700

# 2. Set the working directory to the CMSSW release area
WORKDIR /code/CMSSW_10_6_30

# 3. Copy your project source code into the src/ directory
# CORRECTED: This was 'COPY . COPY . src/', now it's just 'COPY . src/'
COPY . src/

# 4. Compile your code. This is a long-running step and will be cached by Kaniko.
# This RUN command changes directory, sets up the CMSSW environment for this specific
# command, and then compiles.
RUN cd /code/CMSSW_10_6_30/src/jetproducer/jetproducer && \
    eval "$(scram runtime -sh)" && \
    scram b

# 5. Run the analysis. This will be a separate layer. If only the config file
# changes, the compile step above will be cached and only this step will re-run.
RUN scramRun jetproducer_lxplus_7tev_cfg.py

# 6. Set the default command for the container
CMD ["bash"]