Remove Dockerfile

.github/workflows/release.yaml

@@ -25,18 +25,3 @@ jobs:
         with:
           user:     __token__
           password: ${{ secrets.PYPI_TOKEN }}
-
-  push_to_registry:
-    name:    Push Docker image to Docker Hub
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out the repo
-        uses: actions/checkout@v2
-      - name: Push to Docker Hub
-        uses: docker/build-push-action@v1
-        with:
-          username:     ${{ secrets.DOCKER_USERNAME }}
-          password:     ${{ secrets.DOCKER_TOKEN }}
-          repository:   snakemake/snakefmt
-          tags:         latest
-          tag_with_ref: true

CHANGELOG.md

@@ -7,6 +7,13 @@ this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 ## [unreleased]
 
+### Removed
+
+- `Dockerfile` has been removed as the
+  [biocontainers](https://hub.docker.com/r/snakemake/snakefmt/tags) images are smaller
+  and some recent changes to the `cryptography` dependency require Rust to be installed
+  (on Alpine) which further bloats our DockerHub image.
+
 ## [0.3.0]
 
 ### Changed

README.md

@@ -57,31 +57,22 @@ conda install -c bioconda snakefmt
 
 ### Containers
 
-#### Docker
-
-[![Docker Image Version (latest semver)](https://img.shields.io/docker/v/snakemake/snakefmt)](https://hub.docker.com/r/snakemake/snakefmt/tags)
+As `snakefmt` has a Conda recipe, there is a matching image built for each version by
+Biocontainers.
 
-```sh
-docker pull snakemake/snakefmt
-docker run -it snakemake/snakefmt snakefmt --help
-```
+In the following examples, all tags (`<tag>`) can be found
+[here](https://quay.io/repository/biocontainers/snakefmt?tab=tags).
 
-You can find all the available tags on the [Docker Hub repository][dockerhub].
-
-[dockerhub]: https://hub.docker.com/r/snakemake/snakefmt
-
-#### Singularity
+#### Docker
 
-```sh
-URI="docker://snakemake/snakefmt"
-singularity exec "$URI" snakefmt --help
+```shell
+$ docker run -it "quay.io/biocontainers/snakefmt:<tag>" snakefmt --help
 ```
 
-The above will use the latest version. If you want to specify a version then use a [tag][dockerhub] like so.
+#### Singularity
 
-```sh
-VERSION="x.x.x"
-URI="docker://snakemake/snakefmt:${VERSION}"
+```shell
+$ singularity exec "docker://quay.io/biocontainers/snakefmt:<tag>" snakefmt --help
 ```
 
 ### Local