I have a simply Dockerfile to build python requirements into a zip file to be uploaded to AWS Lambda.
FROM amazonlinux:2.0.20221004.0
RUN yum install -y python37 && \
yum install -y python3-pip && \
yum install -y zip && \
yum clean all
RUN python3.7 -m pip install --upgrade pip && \
python3.7 -m pip install virtualenv
COPY aws_requirements.txt .
RUN pip install -r aws_requirements.txt -t ./python
RUN zip -r python.zip ./py
Is there a way to copy the python.zip out of the image to the host during the dockerfile?
>Solution :
With buildkit, you can output the result to a directory on the host instead of pushing to a registry. So you can put the zip file in a scratch image and then output that:
FROM amazonlinux:2.0.20221004.0 as build
RUN yum install -y python37 && \
yum install -y python3-pip && \
yum install -y zip && \
yum clean all
RUN python3.7 -m pip install --upgrade pip && \
python3.7 -m pip install virtualenv
COPY aws_requirements.txt .
RUN pip install -r aws_requirements.txt -t ./python
RUN zip -r /python.zip ./py
FROM scratch as artifact
COPY --from=build /python.zip /python.zip
Then running:
docker build --output type=local,dest=out .
Will create a out/python.zip file.