Custom devcontainer dockerfile for Swift with swift-format.

devcontainer.json

{
    "name": "Swift",
    "build": {
        "dockerfile": "Dockerfile",
        "args": {
            "SWIFT_VERSION": "5.10",
            "SWIFT_FORMAT_VERSION": "510.1.0"
        }
    },
    "features": {
        "ghcr.io/devcontainers/features/common-utils:2": {
            "installZsh": "false",
            "username": "vscode",
            "userUid": "1000",
            "userGid": "1000",
            "upgradePackages": "false"
        },
        "ghcr.io/devcontainers/features/git:1": {
            "version": "os-provided",
            "ppa": "false"
        }
    },
    "runArgs": [
        "--cap-add=SYS_PTRACE",
        "--security-opt",
        "seccomp=unconfined"
    ],
    // Configure tool-specific properties.
    "customizations": {
        // Configure properties specific to VS Code.
        "vscode": {
            // Set *default* container specific settings.json values on container create.
            "settings": {
                "lldb.library": "/usr/lib/liblldb.so"
            },
            // Add the IDs of extensions you want installed when the container is created.
            "extensions": [
                "sswg.swift-lang",
                "vknabel.vscode-apple-swift-format"
            ]
        }
    },
    // Use 'forwardPorts' to make a list of ports inside the container available locally.
    // "forwardPorts": [],
    // Set `remoteUser` to `root` to connect as root instead. More info: https://aka.ms/vscode-remote/containers/non-root.
    "remoteUser": "vscode"
}

Dockerfile

ARG SWIFT_VERSION="5.10"
FROM swift:${SWIFT_VERSION}

ARG SWIFT_FORMAT_VERSION="510.1.0"
RUN git clone --depth 1 --branch $SWIFT_FORMAT_VERSION https://github.com/apple/swift-format.git &&\
    cd swift-format &&\
    swift build -c release &&\
    mkdir -p /usr/local/bin &&\
    mv .build/release/swift-format /usr/local/bin/swift-format

swift-format-devcontainer.md

Custom devcontainer dockerfile for Swift with swift-format.