nexus is added

nexus/3-alpine/Dockerfile

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+FROM alpine:3.9
+
+# https://github.com/cavemandaveman/nexus
+
+LABEL maintainer="cavemandaveman <cavemandaveman@protonmail.com>"
+
+ENV SONATYPE_DIR="/opt/sonatype"
+ENV NEXUS_VERSION="3.16.1-02" \
+    NEXUS_HOME="${SONATYPE_DIR}/nexus" \
+    NEXUS_DATA="/nexus-data" \
+    SONATYPE_WORK=${SONATYPE_DIR}/sonatype-work \
+    JAVA_MIN_MEM="1200M" \
+    JAVA_MAX_MEM="1200M" \
+    JKS_PASSWORD="changeit"
+
+RUN set -x \
+    && apk --no-cache add \
+        openjdk8-jre-base \
+        libressl \
+        su-exec \
+    && mkdir -p "${SONATYPE_DIR}" \
+    && wget -qO - "https://download.sonatype.com/nexus/3/nexus-${NEXUS_VERSION}-unix.tar.gz" \
+    | tar -zxC "${SONATYPE_DIR}" \
+    && mv "${SONATYPE_DIR}/nexus-${NEXUS_VERSION}" "${NEXUS_HOME}" \
+    && adduser -S -h ${NEXUS_DATA} nexus
+
+EXPOSE 5000 8081 8443
+
+WORKDIR "${NEXUS_HOME}"
+
+VOLUME "${NEXUS_DATA}"
+
+COPY bin/docker-entrypoint.sh /
+ENTRYPOINT ["/docker-entrypoint.sh"]
+
+CMD ["bin/nexus", "run"]

nexus/3-alpine/bin/docker-entrypoint.sh

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+#!/bin/sh
+
+set -x
+
+if [ "$1" = 'bin/nexus' ]; then
+
+  if [ -f "${NEXUS_DATA}/keystore.jks" ]; then
+    ln -s "${NEXUS_DATA}/keystore.jks" "${NEXUS_HOME}/etc/ssl/keystore.jks"
+    sed \
+      -e "s|password</Set>|${JKS_PASSWORD}</Set>|g" \
+      -i "${NEXUS_HOME}/etc/jetty/jetty-https.xml"
+    sed \
+      -e "s|nexus-args=.*|nexus-args=\${jetty.etc}/jetty.xml,\${jetty.etc}/jetty-http.xml,\${jetty.etc}/jetty-requestlog.xml,\${jetty.etc}/jetty-https.xml,\${jetty.etc}/jetty-http-redirect-to-https.xml|g" \
+      -i "${NEXUS_HOME}/etc/nexus-default.properties"
+    grep \
+      -q "application-port-ssl" "${NEXUS_HOME}/etc/nexus-default.properties" || \
+      sed \
+        -e "\|application-port|a\application-port-ssl=8443" \
+        -i "${NEXUS_HOME}/etc/nexus-default.properties"
+  fi
+
+  sed \
+    -e "s|-Xms.*|-Xms${JAVA_MIN_MEM}|g" \
+    -e "s|-Xmx.*|-Xmx${JAVA_MAX_MEM}|g" \
+    -i "${NEXUS_HOME}/bin/nexus.vmoptions"
+
+  if [ -d "${SONATYPE_WORK}/nexus3" ]; then
+    rm -rf "${SONATYPE_WORK}/nexus3"
+  fi
+
+  mkdir -p "${NEXUS_DATA}/etc" "${NEXUS_DATA}/log" "${NEXUS_DATA}/tmp" "${SONATYPE_WORK}"
+  ln -s "${NEXUS_DATA}" "${SONATYPE_WORK}/nexus3"
+  chown -R nexus "${NEXUS_DATA}" "${SONATYPE_WORK}"
+  exec su-exec nexus "$@"
+
+fi
+
+exec "$@"

nexus/3-alpine/docker-compose.yml

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+version: "3"
+
+services:
+  nexus:
+    restart: always
+    image: docker.loafle.net/library/nexus:3.16.1-02-alpine
+    container_name: nexus3
+    environment:
+      JAVA_MIN_MEM: "1200M"
+      JAVA_MAX_MEM: "1200M"
+    volumes:
+      - /service/nexus/data:/nexus-data
+    ports:
+      - "8081:8081"
+    ulimits:
+      nofile:
+        soft: 65536
+        hard: 65536