Update Dockerfile

Dockerfile

@@ -1,17 +1,22 @@
 FROM centos:7
 
-RUN yum -y update && yum -y upgrade && \
-    yum -y install wget rpm-build  rpm-devel rpmlint make coreutils diffutils patch rpmdevtools make python
-
-RUN mkdir -p /root/rpmbuild/RPMS/noarch && \
-    mkdir -p /root/rpmbuild/SOURCES && \
-    mkdir -p /root/rpmbuild/SPECS && \
-    mkdir -p /root/rpmbuild/SRPMS
+# Clean up and update yum, then install required packages
+RUN yum clean all && yum -y update -v && yum -y upgrade -v && \
+    yum -y install wget rpm-build rpm-devel rpmlint make coreutils diffutils patch rpmdevtools make python -v
 
+# Set up the build directories
+RUN mkdir -p /root/rpmbuild/{RPMS/noarch,SOURCES,SPECS,SRPMS}
 
+# Copy source and spec files
 COPY *.tar.gz /root/rpmbuild/SOURCES/
 COPY *.patch /root/rpmbuild/SOURCES/
 ADD tomcat.spec /root/rpmbuild/SPECS/
+
+# Define the volume for the built RPMs
 VOLUME /root/rpmbuild/RPMS/noarch
+
+# Set the working directory
 WORKDIR /root/rpmbuild/RPMS/noarch
-CMD ["rpmbuild","--target","noarch","-v","-bb","tomcat.spec"]
+
+# Default command to build the RPM
+CMD ["rpmbuild", "--target", "noarch", "-v", "-bb", "/root/rpmbuild/SPECS/tomcat.spec"]