diff --git a/Dockerfile b/Dockerfile
index f0e23988a6c..de01d2bbaf7 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,10 +19,10 @@ COPY --from=builder ${FROM_DIRECTORY}/consoles/                             /usr
 
 RUN ln -s /usr/share/prometheus/console_libraries /usr/share/prometheus/consoles/ /etc/prometheus/
 RUN mkdir -p /prometheus && \
-    chown -R nobody:nobody etc/prometheus /prometheus
+    chgrp -R 0 /etc/prometheus /prometheus && \
+    chmod -R g=u /etc/prometheus /prometheus
 
 USER       nobody
 EXPOSE     9090
-VOLUME     [ "/prometheus" ]
 WORKDIR    /etc/prometheus
 ENTRYPOINT [ "/bin/prometheus" ]
diff --git a/Dockerfile.rhel b/Dockerfile.rhel
index f132f483c10..9ea5d635068 100644
--- a/Dockerfile.rhel
+++ b/Dockerfile.rhel
@@ -19,11 +19,11 @@ COPY --from=builder ${FROM_DIRECTORY}/consoles/                             /usr
 
 RUN ln -s /usr/share/prometheus/console_libraries /usr/share/prometheus/consoles/ /etc/prometheus/
 RUN mkdir -p /prometheus && \
-    chown -R nobody:nobody etc/prometheus /prometheus
+    chgrp -R 0 /etc/prometheus /prometheus && \
+    chmod -R g=u /etc/prometheus /prometheus
 
 USER       nobody
 EXPOSE     9090
-VOLUME     [ "/prometheus" ]
 WORKDIR    /prometheus
 ENTRYPOINT [ "/bin/prometheus" ]
 CMD        [ "--config.file=/etc/prometheus/prometheus.yml", \
diff --git a/Dockerfile.rhel7 b/Dockerfile.rhel7
index 489d2a97deb..b049b8c2b92 100644
--- a/Dockerfile.rhel7
+++ b/Dockerfile.rhel7
@@ -10,11 +10,11 @@ RUN yum install -y prometheus && \
     yum clean all
 RUN ln -s /usr/share/prometheus/console_libraries /usr/share/prometheus/consoles/ /etc/prometheus/
 RUN mkdir -p /prometheus && \
-    chown -R nobody:nobody etc/prometheus /prometheus
+    chgrp -R 0 /etc/prometheus /prometheus && \
+    chmod -R g=u /etc/prometheus /prometheus
 
 USER       nobody
 EXPOSE     9090
-VOLUME     [ "/prometheus" ]
 WORKDIR    /prometheus
 ENTRYPOINT [ "/bin/prometheus" ]
 CMD        [ "--config.file=/etc/prometheus/prometheus.yml", \