FROM node:10-alpine@sha256:bb33b8ee56dd6b28960fbc4bc4610b8b74e1e9869e844f903a7e47ea1caf20b3

LABEL maintainer="Robert Kaussow <mail@thegeeklab.de>"
LABEL org.opencontainers.image.authors="Robert Kaussow <mail@thegeeklab.de>"
LABEL org.opencontainers.image.title="link-validator"
LABEL org.opencontainers.image.url="https://gitea.rknet.org/docker/link-validator"
LABEL org.opencontainers.image.source="https://gitea.rknet.org/docker/link-validator"
LABEL org.opencontainers.image.documentation="https://gitea.rknet.org/docker/link-validator"

ARG BUILD_VERSION
# renovate: datasource=npm depName=broken-link-checker
ENV BLC_VERSION="${BUILD_VERSION:-0.7.8}"
# renovate: datasource=github-releases depName=caddyserver/caddy
ENV CADDY_VERSION="${CADDY_VERSION:-v2.2.1}"

ENV LINK_VALIDATOR_BASE_DIR=/drone/src \
    LINK_VALIDATOR_SERVER_PORT=80 \
    FORCE_COLOR=true \
    NPM_CONFIG_LOGLEVEL=error

COPY overlay/ /

RUN echo "Installing requirements ..." && \
    apk --update add --virtual .build-deps curl && \
    curl -sSL "https://github.com/caddyserver/caddy/releases/download/${CADDY_VERSION}/caddy_${CADDY_VERSION##v}_linux_amd64.tar.gz" | tar xz -C /usr/local/bin caddy && \
    chmod 755 /usr/local/bin/caddy && \
    BLC_VERSION="${BLC_VERSION##v}" && \
    BLC_MAJOR="${BLC_VERSION%%.*}" && \
    if [ -z "${BLC_MAJOR//[0-9]}" ] && [ -n "$BLC_MAJOR" ]; then \
        echo "Installing link-checker version '$BLC_VERSION' ..." && \
        npm install -g broken-link-checker@"$BLC_VERSION"; \
    else \
        echo "Installing latest link-checker ..." && \
        npm install -g broken-link-checker; \
    fi && \
    apk del .build-deps && \
    rm -rf /var/cache/apk/* && \
    rm -rf /tmp/*

USER root
CMD []
ENTRYPOINT ["/bin/link-validator"]