+ && curl -fsSLO --compressed ${BASE_URL}/apache-maven-${MAVEN_VERSION}-bin.tar.gz \
+ && curl -fsSLO --compressed ${BASE_URL}/apache-maven-${MAVEN_VERSION}-bin.tar.gz.asc \
+ && curl -fsSL --compressed https://downloads.apache.org/maven/KEYS | gpg --import \
+ && gpg --batch --verify apache-maven-${MAVEN_VERSION}-bin.tar.gz.asc apache-maven-${MAVEN_VERSION}-bin.tar.gz \