Dockerfile

FROM eclipse-temurin:11-jdk-alpine
LABEL maintainer="Tim Brust <github@timbrust.de>"

ARG REFRESHED_AT
ENV REFRESHED_AT=$REFRESHED_AT

ARG MAVEN_VERSION=3.9.11
ARG USER_HOME_DIR="/root"
ARG MAVEN_SHA=bcfe4fe305c962ace56ac7b5fc7a08b87d5abd8b7e89027ab251069faebee516b0ded8961445d6d91ec1985dfe30f8153268843c89aa392733d1a3ec956c9978
ARG MAVEN_BASE_URL=https://downloads.apache.org/maven/maven-3/${MAVEN_VERSION}/binaries

# Maven depends on openjdk8-jre, so a manual installation is necessary
SHELL ["/bin/ash", "-eo", "pipefail", "-c"]

RUN apk -U upgrade \
  && apk add --no-cache \
    curl \
  && mkdir -p /usr/share/maven /usr/share/maven/ref \
  && curl -fsSL -o /tmp/apache-maven.tar.gz ${MAVEN_BASE_URL}/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
  && echo "${MAVEN_SHA}  /tmp/apache-maven.tar.gz" | sha512sum -c - \
  && tar -xzf /tmp/apache-maven.tar.gz -C /usr/share/maven --strip-components=1 \
  && rm -f /tmp/apache-maven.tar.gz \
  && ln -s /usr/share/maven/bin/mvn /usr/bin/mvn

ENV MAVEN_HOME /usr/share/maven
ENV MAVEN_CONFIG "$USER_HOME_DIR/.m2"