FROM debian:stable-slim AS builder

LABEL name="vnu"

LABEL version="dev"

LABEL maintainer="sideshowbarker@gmail.com"

ARG TARGETPLATFORM

SHELL ["/bin/bash", "-o", "pipefail", "-c"]

RUN apt-get update && apt-get install --no-install-recommends -y \

ca-certificates \

curl \

&& curl -fL https://github.com/validator/validator/releases/download/latest/vnu.jar -o /vnu.jar && \

apt-get purge -y --auto-remove curl && \

apt-get clean && \

rm -rf /var/lib/apt/lists/*

FROM debian:stable-slim

RUN apt-get update && apt-get install --no-install-recommends -y \

wget \

default-jre-headless \

&& apt-get clean \

&& rm -rf /var/lib/apt/lists/*

COPY --from=builder /vnu.jar /vnu.jar

RUN printf '#!/bin/sh\nexec java -jar /vnu.jar "$@"\n' > /usr/local/bin/vnu && \

chmod +x /usr/local/bin/vnu

ENV LANG=C.UTF-8

ENV JAVA_TOOL_OPTIONS=""

ENV CONNECTION_TIMEOUT_SECONDS=5

ENV SOCKET_TIMEOUT_SECONDS=5

ENV BIND_ADDRESS=0.0.0.0

EXPOSE 8888

HEALTHCHECK --interval=30s --timeout=3s --start-period=10s --retries=3 \

CMD wget --no-verbose --tries=1 --spider http://localhost:8888/ || exit 1

CMD ["sh", "-c", "java -cp /vnu.jar -Dnu.validator.servlet.bind-address=${BIND_ADDRESS} -Dnu.validator.servlet.connection-timeout=${CONNECTION_TIMEOUT_SECONDS} -Dnu.validator.servlet.socket-timeout=${SOCKET_TIMEOUT_SECONDS} nu.validator.servlet.Main 8888"]