From c3e3ff09594084432fb782f1a67e19e455735159 Mon Sep 17 00:00:00 2001
From: Hornwitser <github@hornwitser.no>
Date: Sat, 13 Jul 2024 12:26:16 +0200
Subject: [PATCH] Implement builder image

Add docker build to create a shared image for running CI pipelines and
docker builds based on debian.
---
 .gitlab-ci.yml | 17 +++++++++++++++++
 Dockerfile     | 27 +++++++++++++++++++++++++++
 Readme.md      |  9 +++++++++
 tag-release.sh | 11 +++++++++++
 4 files changed, 64 insertions(+)
 create mode 100644 .gitlab-ci.yml
 create mode 100644 Dockerfile
 create mode 100644 Readme.md
 create mode 100644 tag-release.sh

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..01defa6
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,17 @@
+default:
+  image: docker:24.0.5
+
+build:
+  stage: build
+  script:
+    - docker build $CI_PROJECT_DIR
+      --tag ${REGISTRY_IMAGE}:${CI_COMMIT_REF_SLUG}
+      $(echo "$CI_COMMIT_TAG" | if grep -q $(date -u '+^r%g\.%-V\.\(0\|[1-9][0-9]*\)$');
+        then echo --tag ${REGISTRY_IMAGE}:latest;
+      fi)
+
+deploy:
+  stage: deploy
+  script:
+    - echo "$REGISTRY_PASSWORD" | docker login $CI_REGISTRY -u $REGISTRY_USER --password-stdin
+    - docker push --all-tags ${REGISTRY_IMAGE}
diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 0000000..ef142f1
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,27 @@
+FROM debian:bookworm
+
+RUN set -eux; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		ca-certificates \
+		curl \
+		git \
+	; \
+	install -m 0755 -d /etc/apt/keyrings; \
+	curl -sSL https://download.docker.com/linux/debian/gpg -o /etc/apt/keyrings/docker.asc; \
+	chmod a+r /etc/apt/keyrings/docker.asc; \
+	echo \
+		"deb [arch=$(dpkg --print-architecture) signed-by=/etc/apt/keyrings/docker.asc] \
+		https://download.docker.com/linux/debian \
+		bookworm stable" \
+	> /etc/apt/sources.list.d/docker.list; \
+	apt-get update; \
+	apt-get install -y --no-install-recommends \
+		docker-ce-cli \
+		docker-buildx-plugin \
+		docker-compose-plugin \
+	; \
+	rm -rf /var/lib/apt/lists/*
+
+# References:
+# - docker: https://docs.docker.com/engine/install/debian/#install-from-a-package
\ No newline at end of file
diff --git a/Readme.md b/Readme.md
new file mode 100644
index 0000000..53b82a5
--- /dev/null
+++ b/Readme.md
@@ -0,0 +1,9 @@
+# Builder
+
+Common docker image used for running application builds, CI pipelines, and deployment scripts based on Debian 12.
+
+## Tools included
+
+- `docker`
+- `curl`
+- `git`
\ No newline at end of file
diff --git a/tag-release.sh b/tag-release.sh
new file mode 100644
index 0000000..24575c1
--- /dev/null
+++ b/tag-release.sh
@@ -0,0 +1,11 @@
+#!/bin/bash
+
+# Finds the next available r<year>.<week>.<bump> identifier for the current year and week
+YEAR_WEEK=$(date -u +%g.%-V)
+YEAR=${YEAR_WEEK:0:2}
+WEEK=${YEAR_WEEK:3}
+LAST_BUMP=$(git tag --list | grep '^r'$YEAR'\.'$WEEK'\.\(0\|[1-9][0-9]*\)$' | cut -d . -f 3 | sort -nr | head -n 1)
+RELEASE=r${YEAR_WEEK}.$(( ${LAST_BUMP:--1} + 1 ))
+
+git tag $RELEASE
+echo Tagged $RELEASE