feat: add etcd build

- create rpm for etcd, etcdctl and etcdutl
- manage systemd service for etcd

rpms/etcd/3.5.18/release

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+1

rpms/etcd/Dockerfile

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+# Start with the AlmaLinux 8.10 base image
+FROM git.query.consul/unkin/almalinux8-rpmbuilder:latest
+
+# Create output directory for RPMs
+RUN mkdir -p /app/dist
+
+# Set working directory
+WORKDIR /app
+
+ARG PACKAGE_RELEASE
+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 /app/resources
+
+# Download the required files
+RUN wget -O /app/etcd-v${PACKAGE_VERSION}-linux-amd64.tar.gz https://github.com/etcd-io/etcd/releases/download/v${PACKAGE_VERSION}/etcd-v${PACKAGE_VERSION}-linux-amd64.tar.gz && \
+    tar xf /app/etcd-v${PACKAGE_VERSION}-linux-amd64.tar.gz && \
+    mv /app/etcd-v${PACKAGE_VERSION}-linux-amd64/* /app/
+
+# Default command to build RPMs
+CMD nfpm pkg --config /app/nfpm.yaml --target /app/dist --packager rpm

rpms/etcd/nfpm.yaml

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+# nfpm.yaml
+
+name: etcd
+version: ${PACKAGE_VERSION}
+release: ${PACKAGE_RELEASE}
+arch: amd64
+platform: linux
+section: default
+priority: extra
+description: "A distributed, reliable key-value store for the most critical data of a distributed system."
+
+maintainer: https://etcd.io/
+homepage: https://etcd.io/
+license: Apache-2.0
+
+disable_globbing: false
+
+replaces:
+  - etcd
+  - etcdctl
+  - etcdutl
+
+provides:
+  - etcd
+  - etcdctl
+  - etcdutl
+
+# Files to include in the package
+contents:
+  - src: /app/etcd
+    dst: /usr/bin/etcd
+    file_info:
+      mode: 0755
+      owner: root
+      group: root
+  - src: /app/etcdctl
+    dst: /usr/bin/etcdctl
+    file_info:
+      mode: 0755
+      owner: root
+      group: root
+  - src: /app/etcdutl
+    dst: /usr/bin/etcdutl
+    file_info:
+      mode: 0755
+      owner: root
+      group: root
+  - src: /app/resources/etcd.service
+    dst: /usr/lib/systemd/system/etcd.service
+    file_info:
+      mode: 0644
+      owner: root
+      group: root
+
+# Scripts to run during installation/removal (optional)
+scripts:
+  preinstall: ./resources/scripts/preinstall.sh
+  postinstall: ./resources/scripts/postinstall.sh
+  preremove: ./resources/scripts/preremove.sh
+  postremove: ./resources/scripts/postremove.sh

rpms/etcd/resources/etcd.service

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+[Unit]
+Description=etcd key-value store
+Documentation=https://github.com/etcd-io/etcd
+After=network-online.target local-fs.target remote-fs.target time-sync.target
+Wants=network-online.target local-fs.target remote-fs.target time-sync.target
+
+[Service]
+User=etcd
+Type=notify
+Environment=ETCD_DATA_DIR=/var/lib/etcd
+Environment=ETCD_NAME=%m
+ExecStart=/usr/bin/etcd
+Restart=always
+RestartSec=10s
+LimitNOFILE=40000
+
+[Install]
+WantedBy=multi-user.target

rpms/etcd/resources/scripts/postinstall.sh

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+#!/usr/bin/env bash
+systemctl daemon-reload

rpms/etcd/resources/scripts/postremove.sh

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+#!/usr/bin/env bash
+rm -f /usr/lib/systemd/system/etcd.service
+systemctl daemon-reload

rpms/etcd/resources/scripts/preinstall.sh

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+#!/usr/bin/env bash
+groupadd --system etcd
+useradd --system --shell /sbin/nologin --no-create-home --home-dir /var/lib/etcd --gid etcd etcd
+mkdir -p /var/lib/etcd
+chown etcd:etcd /var/lib/etcd

rpms/etcd/resources/scripts/preremove.sh

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+#!/usr/bin/env bash
+systemctl stop etcd.service