klakegg/dockerfile-import repository overview

⁠Dockerfile Import

Introduces the instruction IMPORT for preprocessing of Dockerfiles.

Syntax:

IMPORT <file> [AS <name>]

Import without name will import the referenced file without any modifications.

Import with name will update instances of COPY and FROM by prefixing the name when relevant.

Imported files may include further import instructions relative to the imported file.

To build your image using import instructions, simply preprocess your Dockerfile:

# Preprocess dockerfile
docker run --rm -it \
    -v $(pwd):/work \
    -u $(id -u) \
    klakegg/dockerfile-import \
    Dockerfile Dockerfile-imported

# Build as usual with the preprocessed file
docker build -t mytag -f Dockerfile-imported .