Alpine-GLibC

Container for Alpine Linux + S6 + GNU LibC

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This image serves as the base image for applications/services that need the GNU C Library to run the binary linked against it.

Based on Alpine Linux from my alpine-s6 image with the s6 init system overlayed in it.

The image is tagged respectively for the following architectures,

• armhf - GLibC from SatoshiPortal
• armv7l - GLibC from SatoshiPortal
• aarch64 - GLibC from SatoshiPortal
• x86_64 - GLibC from sgerrand ( retagged as the latest )

non-x86_64 builds have embedded binfmt_misc support and contain the qemu-user-static binary that allows for running it also inside an x86_64 environment that has it.

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Get the Image

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Pull the image for your architecture it's already available from Docker Hub.

# make pull
docker pull woahbase/alpine-glibc:x86_64

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Run

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If you want to run images for other architectures, you will need to have binfmt support configured for your machine. multiarch, has made it easy for us containing that into a docker container.

# make regbinfmt
docker run --rm --privileged multiarch/qemu-user-static:register --reset

Without the above, you can still run the image that is made for your architecture, e.g for an x86_64 machine..

Running make gets a shell.

# make
# or
# make shell
docker run --rm -it \
  --name docker_glibc --hostname glibc \
  woahbase/alpine-glibc:x86_64 \
  /bin/bash

Stop the container with a timeout, (defaults to 2 seconds)

# make stop
docker stop -t 2 docker_glibc

Removes the container, (always better to stop it first and -f only when needed most)

# make rm
docker rm -f docker_glibc

Restart the container with

# make restart
docker restart docker_glibc

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Shell access

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Get a shell inside a already running container,

# make debug
docker exec -it docker_glibc /bin/bash

set user or login as root,

# make rdebug
docker exec -u root -it docker_glibc /bin/bash

To check logs of a running container in real time

# make logs
docker logs -f docker_glibc

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Development

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If you have the repository access, you can clone and build the image yourself for your own system, and can push after.

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Setup

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Before you clone the repo, you must have Git, GNU make, and Docker setup on the machine.

git clone https://github.com/woahbase/alpine-glibc
cd alpine-glibc

You can always skip installing make but you will have to type the whole docker commands then instead of using the sweet make targets.

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Build

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You need to have binfmt_misc configured in your system to be able to build images for other architectures.

Otherwise to locally build the image for your system. [ARCH defaults to x86_64, need to be explicit when building for other architectures.]

# make ARCH=x86_64 build
# sets up binfmt if not x86_64
docker build --rm --compress --force-rm \
  --no-cache=true --pull \
  -f ./Dockerfile_x86_64 \
  --build-arg DOCKERSRC=woahbase/alpine-s6:x86_64 \
  -t woahbase/alpine-glibc:x86_64 \
  .

To check if its working..

# make ARCH=x86_64 test
docker run --rm -it \
  --name docker_glibc --hostname glibc \
  --entrypoint /init \
  woahbase/alpine-glibc:x86_64 \
  sh -ec 'bash --version'

And finally, if you have push access,

# make ARCH=x86_64 push
docker push woahbase/alpine-glibc:x86_64

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Maintenance

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Sources at Github. Built at Travis-CI.org (armhf / x64 builds). Images at Docker hub. Metadata at Microbadger.

Maintained by WOAHBase.