docs: add docs

docs/internals/docker-build.md

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+# Docker build
+
+There are currently two channels setup.
+
+Nightly and release.
+
+## Nightly
+
+Nightly as the name suggest is build every night on schedule with latest version of Pterodactyl Panel.
+
+## Release
+
+Release on the other hand is build with tagged versions of Pterodactyl Panel and is considered to be used in production.

docs/internals/releases.md

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+# Releases
+
+Currently releases are hand made, but it is planned to automate the release process via GitHub Actions.
+
+For more information, see [Roadmap](../roadmap.md)
+
+## Versioning
+
+As said in the [Changelog](../changelog.md), this project is currently under active development and releases are following [zer0ver](https://0ver.org/) until a stable release.
+
+When times come for a stable release, [Semantic Versioning](https://semver.org/spec/v2.0.0.html) will be strictly followed.
+
+## Stable release
+
+There is currently no ETA.