# Docker images Docker Hub includes Docker images under [`fpco/stack-build'](https://hub.docker.com/r/fpco/stack-build). To update those images with a new version of Stack: 1. Under [commercialhaskell/stackage/automated/dockerfiles](https://github.com/commercialhaskell/stackage/tree/master/automated/dockerfiles/), add `lts-X.Y/Dockerfile` (where `X.Y` is the latest Stackage Haskell LTS version), containing (where `X.Z` is the previous Haskell LTS version, and `X.Y.Z` is the newly released Stack version): ~~~dockerfile FROM $DOCKER_REPO:lts-X.Z ARG STACK_VERSION=X.Y.Z RUN wget -qO- https://github.com/commercialhaskell/stack/releases/download/v$STACK_VERSION/stack-$STACK_VERSION-linux-x86_64.tar.gz | tar xz --wildcards --strip-components=1 -C /usr/local/bin '*/stack' ~~~ 2. Run `./build.sh lts-X.Y`. Then test that the new image has the new version of Stack. For example, command: ~~~text docker run --rm fpco/stack-build:lts stack --version ~~~ 3. Use the following commands to push the new image to the registry: ~~~text ./build.sh --push lts-X.Y ./build.sh --push --small lts-X.Y ~~~