Initial commit for workflow

.editorconfig

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+; This file is for unifying the coding style for different editors and IDEs.
+; More information at http://EditorConfig.org
+
+root = true
+; Use 2 spaces for indentation in all files
+
+[*]
+end_of_line = lf
+charset = utf-8
+trim_trailing_whitespace = true
+indent_style = space
+indent_size = 2
+insert_final_newline = true

.github/workflows/update.yml

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+name: Update Data
+on:
+  push:
+  schedule:
+    # “At minute 17 past hour 6 and 18.”
+    # https://crontab.guru/#17_6,18_*_*_*
+    - cron: '17 6,18 * * *'
+jobs:
+  update:
+    name: Update data
+    runs-on: ubuntu-latest
+    steps:
+    - name: Cache Repositories
+      uses: actions/cache@v3
+      with:
+        path: ~/.cache
+        key: cache
+    - uses: actions/checkout@v3
+      name: Clone self repository
+      with:
+        ref: ${{ github.head_ref }}
+    - uses: actions/checkout@v3
+      name: Clone website
+      with:
+        repository: endoflife-date/endoflife.date
+        path: website
+        submodules: false
+    - name: Update Release data
+      run: |
+        mkdir -p ~/.cache/{npm,git,oci} releases/{npm,git,oci}
+        ruby update.rb website ~/.cache releases
+    - uses: stefanzweifel/git-auto-commit-action@v4
+      name: Commit and update new releases
+      with:
+        commit_message: Update Releases
+        commit_author: actions-user <65916846+actions-user@users.noreply.github.com>

update.rb

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+require 'yaml'
+require 'date'
+
+WEBSITE_DIR=ARGV[0]
+CACHE_DIR=ARGV[1]
+OUTPUT_DIR=ARGV[2]
+
+def update_git_releases(product, url)
+  pwd = Dir.pwd
+  repo_dir = "#{CACHE_DIR}/git/#{product}"
+  puts "Fetching #{url}"
+  unless Dir.exist? repo_dir
+    `git init --bare #{repo_dir}`
+  end
+  Dir.chdir repo_dir
+  `git config extensions.partialClone true`
+  `git fetch --auto-gc --auto-maintenance --progress --prune --prune-tags --quiet --tags --filter=blob:none "#{url}"`
+  Dir.chdir pwd
+end
+
+Dir.glob("#{WEBSITE_DIR}products/*.md").each do |product_file|
+  data = YAML.load_file product_file, permitted_classes: [Date]
+  data['auto'].each_entry do |ecosystem, url|
+    product = File.basename product_file, ".md"
+    case ecosystem
+    when 'git'
+      update_git_releases(product, url)
+    else
+      puts "No support for #{ecosystem} yet (#{url})"
+    end
+  end if data['auto']
+end