refactor: standardize Dockerfile and build script structure

Standardize all RPM packages to use a consistent build pattern:
- Simple Dockerfiles that copy resources/ and call build.sh
- Move all build logic to resources/build.sh scripts
- Consolidate nfpm.yaml and scripts into resources/ directory
- Update base image to almalinux9-rpmbuilder for consistency

Changes:
- Refactored 37 packages total (simple + complex)
- HashiCorp tools: consul, vault, terraform, terragrunt, packer, nomad, nomad-autoscaler
- Development tools: g10k, etcd, nfpm, ruff, uv, unrar, nzbget, boilerplate
- VictoriaMetrics: vlutils, vmutils, victoria-logs
- Network tools: cni-plugins, consul-cni, unkin-ca-certificates
- Jellyfin suite: jellyfin-web, jellyfin-server, jellyfin-ffmpeg-bin
- System packages: puppet-initial, incus

This standardization improves maintainability and consistency across
the entire RPM build system while preserving all existing functionality.

rpms/nzbget/Dockerfile

@@ -1,5 +1,4 @@
-# Start with the AlmaLinux 8.10 base image
-FROM git.unkin.net/unkin/almalinux8-rpmbuilder:latest
+FROM git.unkin.net/unkin/almalinux9-rpmbuilder:latest
 
 # Create output directory for RPMs
 RUN mkdir -p /app/dist
@@ -12,9 +11,8 @@ ENV PACKAGE_RELEASE=${PACKAGE_RELEASE}
 ARG PACKAGE_VERSION
 ENV PACKAGE_VERSION=${PACKAGE_VERSION}
 
-# Copy nfpm.yaml from the context into the container
-COPY nfpm.yaml /app/nfpm.yaml
+# Copy resources from the context into the container
+COPY resources /app/resources
 
-# Download the required files
-RUN wget -O /app/dist/nzbget-${PACKAGE_VERSION}-${PACKAGE_RELEASE}.x86_64.rpm \
-  https://github.com/nzbgetcom/nzbget/releases/download/v$PACKAGE_VERSION/nzbget-${PACKAGE_VERSION}-${PACKAGE_RELEASE}.x86_64.rpm
+# Default command to build RPMs
+CMD /app/resources/build.sh

rpms/nzbget/resources/build.sh

@@ -0,0 +1,5 @@
+#!/usr/bin/bash
+
+# Download the pre-built RPM from GitHub releases
+wget -O /app/dist/nzbget-${PACKAGE_VERSION}-${PACKAGE_RELEASE}.x86_64.rpm \
+  https://github.com/nzbgetcom/nzbget/releases/download/v$PACKAGE_VERSION/nzbget-${PACKAGE_VERSION}-${PACKAGE_RELEASE}.x86_64.rpm