How to source a script with environment variables in a docker build process?

Question

I\'m creating an image that has a similar problem like the following docker project:

Dockerfile

FROM alpine:3.9.3

COPY ./env.sh /env.sh
RUN source         


        

Answer 1

I found an alternative option that I like better:

Configure an ENTRYPOINT dockerfile step, that sources the file, and then runs the CMD received by argument:

ENTRYPOINT ["sh", "-c", "source /env.sh && \"$@\"", "-s"]