Tidy up a bit

docker/Dockerfile-deb

@@ -0,0 +1,14 @@
+ARG DISTRO=ubuntu
+ARG RELEASE=noble
+
+FROM ${DISTRO}:${RELEASE}
+
+RUN apt-get update && apt-get install -y \
+    dpkg-dev \
+    build-essential \
+    fakeroot \
+    make \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /src
+CMD ["make", "package-deb"]

docker/Dockerfile-el7

@@ -0,0 +1,15 @@
+# Dockerfile.rpm
+
+ARG DISTRO=oraclelinux
+ARG RELEASE=7
+
+FROM ${DISTRO}:${RELEASE}
+
+RUN yum install -y \
+    rpm-build \
+    make \
+    oracle-epel-release-el7 \
+    && yum clean all
+
+WORKDIR /src
+CMD ["make", "package-rpm"]

docker/Dockerfile-rpm

@@ -0,0 +1,14 @@
+# Dockerfile.rpm
+
+ARG DISTRO=rockylinux
+ARG RELEASE=9
+
+FROM ${DISTRO}:${RELEASE}
+
+RUN dnf install -y \
+    rpm-build \
+    make \
+    && dnf clean all
+
+WORKDIR /src
+CMD ["make", "package-rpm"]