From 08c5f16d04cddc25ae6b003d91d2af3e25ec5323 Mon Sep 17 00:00:00 2001
From: "Stanislav N. aka pztrn" <pztrn@pztrn.name>
Date: Wed, 23 Dec 2020 18:39:02 +0500
Subject: [PATCH] Initial commit.

---
 .gitlab-ci.yml          | 24 +++++++++++++++++++
 README.md               | 27 ++++++++++++++++++++-
 images/docker.sh        |  1 +
 images/golangci-lint.sh |  1 +
 mirror.sh               | 52 +++++++++++++++++++++++++++++++++++++++++
 5 files changed, 104 insertions(+), 1 deletion(-)
 create mode 100644 .gitlab-ci.yml
 create mode 100644 images/docker.sh
 create mode 100644 images/golangci-lint.sh
 create mode 100755 mirror.sh

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
new file mode 100644
index 0000000..a92aaba
--- /dev/null
+++ b/.gitlab-ci.yml
@@ -0,0 +1,24 @@
+image: docker:19.03.13
+
+services:
+  - docker:19.03.13-dind
+
+variables:
+  DOCKER_HOST: tcp://docker:2375
+  DOCKER_TCP_PORT: 2375
+  DOCKER_TLS_CERTDIR: ""
+
+stages:
+  - mirror
+
+before_script:
+  - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
+
+mirror:
+  stage: mirror
+  tags:
+    - docker
+  script:
+    - ./mirror.sh
+  only:
+    - master
diff --git a/README.md b/README.md
index 5e5c48c..e7e2426 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,28 @@
 # mirror
 
-Docker images mirroring project.
\ No newline at end of file
+Docker images mirroring project.
+
+This thing appears after constant inability of Gitlab developers to mitigate
+Docker Hub ratelimiting shit.
+
+Feel free to use and re-use these images and this mirrorer.
+
+If it helps you much - please, [donate](https://paypal.me/pztrn)
+
+## How to use
+
+This script assumes that you are already logged in into Gitlab Registry.
+
+### In CI
+
+Ensure to add global `before_script`:
+
+```
+before_script:
+  - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN $CI_REGISTRY
+```
+
+## Adding new image
+
+If you decided to use my mirrors and want to mirror some image - please make an
+MR with image name be exactly same as in other files in `images` directory.
diff --git a/images/docker.sh b/images/docker.sh
new file mode 100644
index 0000000..fd71d65
--- /dev/null
+++ b/images/docker.sh
@@ -0,0 +1 @@
+echo "docker:19.03.13-dind"
diff --git a/images/golangci-lint.sh b/images/golangci-lint.sh
new file mode 100644
index 0000000..54c1b20
--- /dev/null
+++ b/images/golangci-lint.sh
@@ -0,0 +1 @@
+echo "golangci-lint:v1.13.2 golangci-lint:latest"
diff --git a/mirror.sh b/mirror.sh
new file mode 100755
index 0000000..5a38f57
--- /dev/null
+++ b/mirror.sh
@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+# The Docker Image Mirror script.
+# Designed to be used in Gitlab CI.
+
+WHAT_TO_MIRROR=()
+REGISTRY_TO_MIRROR=registry.gitlab.pztrn.name/containers/mirror
+
+for file in $(ls ./images/*.sh); do
+	echo "Importing ${file}..."
+	WHAT_TO_MIRROR=( ${WHAT_TO_MIRROR} $(bash ${file}) )
+done
+
+echo ${WHAT_TO_MIRROR[@]}
+
+function mirror() {
+	image=$1
+	image_name=$(echo "${image}" | cut -d":" -f 1)
+	image_version=$(echo "${image}" | cut -d":" -f 2)
+
+	echo -n "Mirroring ${image}... "
+	docker pull "${image}" &> /dev/null
+	if [ $? -ne 0 ]; then
+		echo "FAIL"
+		exit
+	fi
+
+	image_hash=$(docker images -a | grep "${image_name}" | grep "${image_version}" | awk {' print $3 '})
+	echo -n "${image_hash} received... "
+
+	docker tag "${image_hash}" "${REGISTRY_TO_MIRROR}/${image}"
+	if [ $? -ne 0 ]; then
+		echo "FAIL"
+		exit
+	fi
+
+	echo -n "pushing... "
+	docker push "${REGISTRY_TO_MIRROR}/${image}"
+	if [ $? -ne 0 ]; then
+		echo "FAIL"
+		exit
+	fi
+
+	echo "OK"
+
+	docker image rm "${image}"
+}
+
+# Mirror images.
+for image in ${WHAT_TO_MIRROR[@]}; do
+	mirror ${image}
+done