Add markdownlint and shellcheck Docker images - #137
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These replace super-linter for markdown and shell script linting across Pony projects. super-linter v3.8.3 pulls a 2GB+ image containing dozens of linters when we only need two. These dedicated images are small, fast, and follow the existing actionlint pattern. Both images have entrypoint wrappers for fire-and-go usage — consumers just `uses: docker://ghcr.io/ponylang/shared-docker-ci-<tool>:<tag>` with no args. The markdownlint entrypoint reads .markdownlintignore and converts entries to negation patterns since markdownlint-cli2 doesn't read that file natively. The shellcheck entrypoint finds and lints all .sh/.bash files automatically. A workflow_dispatch workflow builds all three linter images (actionlint, markdownlint, shellcheck) from the GitHub UI.
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Add dedicated markdownlint and shellcheck Docker images to replace
super-linter across Pony projects. super-linter v3.8.3 pulls a 2GB+
image containing dozens of linters when we only need markdown and
shell script linting.
Both images have entrypoint wrappers for fire-and-go usage — consumers
just
uses: docker://ghcr.io/ponylang/shared-docker-ci-<tool>:<tag>with no args. The markdownlint entrypoint reads
.markdownlintignoreand converts entries to negation patterns (markdownlint-cli2 doesn't
read that file natively). The shellcheck entrypoint finds and lints
all
.sh/.bashfiles automatically.Includes a
workflow_dispatchworkflow to build and push both imagesfrom the GitHub UI. Super-linter stays in this repo's own pr.yml for
now; switching to the new images happens in a follow-up after the
first build.