Create readthedocs documentation

Author: steevanb

.readthedocs.yml

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+# Read the Docs configuration file
+# See https://docs.readthedocs.io/en/stable/config-file/v2.html for details
+
+version: 2
+
+build:
+    os: ubuntu-24.04
+    tools:
+        python: "3.13"
+    jobs:
+        pre_install:
+            - pip install mkdocs-material
+
+mkdocs:
+    configuration: docs/mkdocs.yml
+
+python:
+    install:
+        - requirements: docs/requirements.txt

docs/.readthedocs.yaml

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+body {
+    cursor: default;
+}
+
+h1 {
+    margin-bottom: 0.5em !important;
+    color: #4051B5 !important;
+    font-weight: 500 !important;
+}
+
+h2 {
+    margin-top: 0.5em !important;
+    margin-bottom: 0.5em !important;
+    color: #4051B5 !important;
+    font-size: 1.3em;
+}
+
+div.md-main__inner {
+    margin-top: 0;
+}
+
+:root {
+    --md-typeset-a-color: #30a2a9;
+}
+
+.icon-green {
+    color: #069006;
+}
+
+.md-typeset .admonition > .admonition-title {
+    display: flex;
+    justify-content: space-between;
+    align-items: center;
+}
+
+.tryit-link {
+    margin-left: auto;
+}
+
+li.md-nav__item--active > label.md-nav__link > span.md-ellipsis,
+li.md-nav__item--active > label.md-nav__link > span.md-nav__icon
+{
+    color: var(--md-typeset-a-color);
+}

docs/assets/css/theme.css

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+document.addEventListener("DOMContentLoaded", function(event) {
+    document.querySelector(".md-search__input").addEventListener("focus", (e) => {
+        const event = new CustomEvent("readthedocs-search-show");
+        document.dispatchEvent(event);
+    });
+});

docs/assets/images/demo.gif

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+document.addEventListener("DOMContentLoaded", () => {
+    document.querySelectorAll(".admonition .admonition-title").forEach(title => {
+        if (title.textContent.trim() === "Try it!") {
+            const link = document.createElement("a");
+            link.href = "/en/latest/examples/execute-example";
+            link.className = "tryit-link";
+            link.textContent = "How to execute examples";
+            title.appendChild(link);
+        }
+    });
+});

docs/assets/js/readthedocs-search.js

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+---
+hide:
+  - toc
+---
+
+# Work on the code
+
+You can add a volume from your project in `/composer/vendor/steevanb/php-parallel-processes` to work on the code:
+
+```bash hl_lines="6"
+docker \
+    run \
+        --rm \
+        -it \
+        -v "$(pwd)":/app \
+        -v "$(pwd)":/composer/vendor/steevanb/php-parallel-processes \
+        steevanb/php-parallel-processes:1.1.0-alpine \
+            php /app/parallel-processes.php 
+```
+
+# Work on the documentation
+
+We use [readthedocs](https://about.readthedocs.com/), 
+[mkdocs](https://docs.readthedocs.com/platform/stable/intro/mkdocs.html) 
+and [Material for MkDocs](https://squidfunk.github.io/mkdocs-material/reference).
+
+Documentation is written in Markdown in [docs/](https://github.com/steevanb/php-parallel-processes/tree/readthedocs/docs).
+
+See [Material for MkDocs](https://squidfunk.github.io/mkdocs-material/reference/code-blocks/) for Markdown syntaxes and examples.

docs/assets/js/try-it.js

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+---
+hide:
+  - toc
+---
+
+# How to execute an example
+
+You need to download the latest version of [parallel-process-example.sh](https://raw.githubusercontent.com/steevanb/php-parallel-processes/refs/heads/master/examples/parallel-processes-example.sh).
+
+Then you can execute it:
+```bash
+parallel-process-example.sh path/to/example.php
+```

docs/contributing/tips-for-devs.md

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+---
+hide:
+  - toc
+---
+
+# Compatibility
+
+`parallel-processes` is compatible with most development and production environments.
+
+# Installed as a Composer dependency
+
+<div class="grid cards" markdown>
+
+- :material-language-php: __PHP__: ^8.2
+- :material-penguin: __OS__: Linux and macOS
+- :material-symfony: __[symfony/console](https://symfony.com/doc/current/components/console.html)__: ^7.0
+- :material-symfony: __[symfony/process](https://symfony.com/doc/current/components/process.html)__: ^7.0
+
+</div>
+
+See [Installation with Composer](../installation/composer-dependency.md).
+
+# Used with the Docker image
+
+<div class="grid cards" markdown>
+
+- :material-docker: __Docker__: a recent compatible Docker Engine must be installed
+- :material-penguin: __OS__: Linux, Windows and macOS
+
+</div>
+
+See [use it with Docker](../installation/docker-image.md).

docs/examples/execute-example.md

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+---
+hide:
+  - toc
+---
+
+# License
+
+`parallel-processes` is licensed under the [Apache 2.0 License](https://github.com/steevanb/php-parallel-processes/blob/master/LICENSE).
+
+The Apache 2.0 license allows you to freely use, modify, and distribute software, including for commercial purposes,
+as long as you keep the copyright and license notices and indicate any changes made.