docs: Add devcontainer related badges in README. (#282)

README.md

@@ -4,6 +4,7 @@ A Python project template covering the entire development lifecycle with various
 
 [![CI](https://github.com/serious-scaffold/ss-python/actions/workflows/ci.yml/badge.svg)](https://github.com/serious-scaffold/ss-python/actions/workflows/ci.yml)
 [![Release](https://github.com/serious-scaffold/ss-python/actions/workflows/release.yml/badge.svg)](https://github.com/serious-scaffold/ss-python/actions/workflows/release.yml)
+[![DevContainer Prebuild](https://github.com/serious-scaffold/ss-python/actions/workflows/devcontainer.yml/badge.svg)](https://github.com/serious-scaffold/ss-python/actions/workflows/devcontainer.yml)
 [![Coverage](https://img.shields.io/endpoint?url=https://serious-scaffold.github.io/ss-python/_static/badges/coverage.json)](https://serious-scaffold.github.io/ss-python/reports/coverage)
 [![PyPI](https://img.shields.io/pypi/v/ss-python)](https://pypi.org/project/ss-python/)
 [![PyPI - Python Version](https://img.shields.io/pypi/pyversions/ss-python)](https://pypi.org/project/ss-python/)
@@ -14,6 +15,7 @@ A Python project template covering the entire development lifecycle with various
 [![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
 [![Pydantic v2](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/pydantic/pydantic/5697b1e4c4a9790ece607654e6c02a160620c7e1/docs/badge/v2.json)](https://pydantic.dev)
 [![Serious Scaffold Python](https://img.shields.io/endpoint?url=https://serious-scaffold.github.io/ss-python/_static/badges/logo.json)](https://serious-scaffold.github.io/ss-python)
+[![Open in Dev Containers](https://img.shields.io/static/v1?label=Dev%20Containers&message=Open&color=blue&logo=visualstudiocode)](https://vscode.dev/redirect?url=vscode://ms-vscode-remote.remote-containers/cloneInVolume?url=https://github.com/serious-scaffold/ss-python)
 
 > [!WARNING]
 > _Serious Scaffold Python_ is in the **Alpha** phase.

includes/variable.jinja

@@ -43,6 +43,7 @@
   [% if repo_host_type == 'github.com' -%]
 [![CI](https://{{ repo_url() }}/actions/workflows/ci.yml/badge.svg)](https://{{ repo_url() }}/actions/workflows/ci.yml)
 [![Release](https://{{ repo_url() }}/actions/workflows/release.yml/badge.svg)](https://{{ repo_url() }}/actions/workflows/release.yml)
+[![DevContainer Prebuild](https://{{ repo_url() }}/actions/workflows/devcontainer.yml/badge.svg)](https://{{ repo_url() }}/actions/workflows/devcontainer.yml)
   [%- elif repo_host_type == 'gitlab.com' or repo_host_type == 'gitlab-self-managed' -%]
 [![pipeline status](https://{{ repo_url() }}/badges/main/pipeline.svg)](https://{{ repo_url() }}/-/commits/main)
   [%- endif %]

template/README.md.jinja

@@ -22,6 +22,7 @@
 [![Ruff](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json)](https://github.com/astral-sh/ruff)
 [![Pydantic v2](https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/pydantic/pydantic/5697b1e4c4a9790ece607654e6c02a160620c7e1/docs/badge/v2.json)](https://pydantic.dev)
 {{ logo_badge() }}
+[![Open in Dev Containers](https://img.shields.io/static/v1?label=Dev%20Containers&message=Open&color=blue&logo=visualstudiocode)](https://vscode.dev/redirect?url=vscode://ms-vscode-remote.remote-containers/cloneInVolume?url=https://{{ repo_url() }})
 
 [% if development_status == "Alpha" -%]
 > [!WARNING]