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=3.9.7
ARG USER_HOME_DIR="/root"
ARG MAVEN_SHA=f64913f89756264f2686e241f3f4486eca5d0dfdbb97077b0efc389cad376053824d58caa35c39648453ca58639f85335f9be9c8f217bfdb0c2d5ff2a9428fac
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"