Initial Commit

Dockerfile

@@ -0,0 +1,20 @@
+FROM docker.io/library/alpine:3.12
+
+ARG NODEJS_VERSION=12.22.6-r0
+ARG MARKDOWNLINT_VERSION
+
+RUN set -ex && \
+    apk add --no-cache nodejs=${NODEJS_VERSION} nodejs-npm=${NODEJS_VERSION}
+
+RUN echo ${MARKDOWNLINT_VERSION}
+
+RUN if [ ! -z "${MARKDOWNLINT_VERSION}" ]; then set -ex; npm install -g markdownlint-cli@${MARKDOWNLINT_VERSION}; fi
+RUN if [ -z "${MARKDOWNLINT_VERSION}" ]; then set -ex; npm install -g markdownlint-cli; fi
+
+RUN set -ex && \
+    npm cache clean --force && \
+    apk del nodejs-npm
+
+WORKDIR /work
+ENTRYPOINT ["/usr/bin/markdownlint"]
+CMD ["."]