Fix sudoers file permissions

Dockerfile.centos7

@@ -35,9 +35,10 @@ RUN sed -i '/^ip_resolve=/{h;s/=.*/=4/};${x;/^$/{s//ip_resolve=4/;H};x}' /etc/yu
 	rm -f /tmp/requirements.txt && \
 	yum -y clean all
 
-COPY /entrypoint.sh /entrypoint.sh
-COPY /sudoers /etc/sudoers.d/ansible
-RUN chmod 755 /entrypoint.sh
+COPY entrypoint.sh /entrypoint.sh
+COPY sudoers /etc/sudoers.d/ansible
+
+RUN chmod 755 /entrypoint.sh && chmod 600 /etc/sudoers.d/ansible
 
 RUN groupadd --gid $GID ansible && \
 	adduser --home /home/ansible --shell /bin/bash --gid $GID --uid $UID ansible

Dockerfile.centos8

@@ -35,7 +35,7 @@ RUN sed -i '/^ip_resolve=/{h;s/=.*/=4/};${x;/^$/{s//ip_resolve=4/;H};x}' /etc/yu
 
 COPY entrypoint.sh /entrypoint.sh
 COPY sudoers /etc/sudoers.d/ansible
-RUN chmod 755 /entrypoint.sh
+RUN chmod 755 /entrypoint.sh && chmod 600 /etc/sudoers.d/ansible
 
 RUN groupadd --gid $GID ansible && \
 	adduser --home /home/ansible --shell /bin/bash --gid $GID --uid $UID ansible

Dockerfile.debian10

@@ -40,7 +40,7 @@ RUN apt-get -y update && \
 
 COPY entrypoint.sh /entrypoint.sh
 COPY sudoers /etc/sudoers.d/ansible
-RUN chmod 755 /entrypoint.sh
+RUN chmod 755 /entrypoint.sh && chmod 600 /etc/sudoers.d/ansible
 
 RUN addgroup --gid $GID ansible && \
 	adduser --home /home/ansible --shell /bin/bash --disabled-password --gecos '' --gid $GID --uid $UID ansible