[#14] build 构建融合metric镜像，移除测试节点镜像，直接使用基础镜像

src/metric/prometheus/build/Dockerfile

@@ -61,10 +61,25 @@ RUN mkdir -p ${PROMETHEUS_BASE_PATH}/rules \
     && ln -s ${PROMETHEUS_BASE_PATH} /prometheus
 
 # 修改 Prometheus 用户 UID/GID 并授权
-RUN usermod -u ${ARGUS_BUILD_UID} nobody && \
-    groupmod -g ${ARGUS_BUILD_GID} nogroup && \
-    chown -h nobody:nogroup /prometheus && \
-    chown -R nobody:nogroup ${PROMETHEUS_BASE_PATH} && \
+RUN set -eux; \
+    existing_user=""; \
+    if getent passwd "${ARGUS_BUILD_UID}" >/dev/null 2>&1; then \
+        existing_user="$(getent passwd "${ARGUS_BUILD_UID}" | cut -d: -f1)"; \
+    fi; \
+    if [ -n "$existing_user" ] && [ "$existing_user" != "nobody" ]; then \
+        userdel -r "$existing_user" || true; \
+    fi; \
+    existing_group=""; \
+    if getent group "${ARGUS_BUILD_GID}" >/dev/null 2>&1; then \
+        existing_group="$(getent group "${ARGUS_BUILD_GID}" | cut -d: -f1)"; \
+    fi; \
+    if [ -n "$existing_group" ] && [ "$existing_group" != "nogroup" ]; then \
+        groupdel "$existing_group" || true; \
+    fi; \
+    usermod -u ${ARGUS_BUILD_UID} nobody; \
+    groupmod -g ${ARGUS_BUILD_GID} nogroup; \
+    chown -h nobody:nogroup /prometheus; \
+    chown -R nobody:nogroup ${PROMETHEUS_BASE_PATH}; \
     chown -R nobody:nogroup /etc/prometheus
 
 # supervisor 配置