############################
#
# Image that contains the doc lint tools.
#
############################

# ALPINE_VERSION is defined in .gitlab-ci.yml
ARG ALPINE_VERSION

FROM alpine:${ALPINE_VERSION}
MAINTAINER GitLab Technical Writing team

# VALE_VERSION and MARKDOWNLINT_VERSION are defined in .gitlab-ci.yml
ARG VALE_VERSION
ARG MARKDOWNLINT_VERSION

# Install dependencies
RUN apk add --no-cache -U \
    bash         \
    build-base   \
    curl         \
    git          \
    gnupg        \
    grep         \
    libc6-compat \
    libcurl      \
    libxslt      \
    libxslt-dev  \
    nodejs       \
    openssl      \
    pngquant     \
    tar          \
    yarn

# Install vale
RUN curl -sfL https://install.goreleaser.com/github.com/ValeLint/vale.sh | sh -s v${VALE_VERSION}

# Set up needed environment variables that are called with --build-arg when
# the Docker image is built (see .gitlab-ci.yml).
ARG CI_COMMIT_REF_NAME
# If CI_COMMIT_REF_NAME is not set (local development), set it to master
ENV CI_COMMIT_REF_NAME ${CI_COMMIT_REF_NAME:-master}

WORKDIR /tmp

# markdownlint-cli pinned to control when new versions are put in place.
RUN yarn global add markdownlint-cli@${MARKDOWNLINT_VERSION} && yarn cache clean