Alpine-ShellCheck

Alpine Linux with ShellCheck -- a static analysis tool for shell scripts

Minimalist image size: 22 MB (download size is only 6 MB)

Include:

• Alpine Linux (5 MB)
• Shellcheck binary (16 MB)
• Object dependencies (1 MB)

Image builds by Travis CI are automatically pushed to Docker Hub repository: nlknguyen/alpine-shellcheck

See the Docker Hub repository for more information.

Maintainer Notes

2 Dockerfiles

• builder/Dockerfile is used to build shellcheck from source, which is cloned from shellscheck GitHub repository, and collect executable shellcheck binary and object dependencies into a directory for easy retrieval. When it runs, the binaries will be copied out to the mounted directory.

• ./Dockerfile is used to build the image that is based on alpine:latest and contains only the neccessary binaries for shellcheck to run. The entry point of the image is shellcheck program, and /mnt is the designated mount point when using this image as a CLI program.

Build steps

From project directory:

docker build -t builder builder/

Then run this. The container will copy the binary and dependencies out to package directory in host machine

docker run --rm -it -v $(pwd):/mnt builder

Once the package directory is available, build the final image:

docker build -t nlknguyen/alpine-shellcheck .

These are essentially the steps that Travis CI carry on before pushing the final image to Docker Hub.