Add devcontainer for VCS development without host system dependencies (#112)

Created via AI (GitHub Copilot Coding Agent)

Signed-off-by: Matt Farina <matt.farina@suse.com>
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: Matt Farina <matt.farina@suse.com>

Author: Copilot

.devcontainer/Dockerfile

@@ -0,0 +1,39 @@
+# Use SUSE BCI Golang as the base image
+FROM registry.suse.com/bci/golang:1.25
+
+# Install VCS tools and other dependencies
+RUN zypper --non-interactive refresh && \
+    zypper --non-interactive install -y \
+    git \
+    mercurial \
+    subversion \
+    bzr \
+    make \
+    curl \
+    sudo \
+    shadow && \
+    zypper clean --all
+
+# Create a non-root user for development
+ARG USERNAME=vscode
+ARG USER_UID=1000
+ARG USER_GID=$USER_UID
+
+RUN groupadd --gid $USER_GID $USERNAME && \
+    useradd --uid $USER_UID --gid $USER_GID -m $USERNAME && \
+    echo $USERNAME ALL=\(root\) NOPASSWD:ALL > /etc/sudoers.d/$USERNAME && \
+    chmod 0440 /etc/sudoers.d/$USERNAME
+
+# Set up Go workspace
+ENV GOPATH=/go
+ENV PATH=$GOPATH/bin:/usr/local/go/bin:$PATH
+
+# Create Go workspace directories with correct permissions
+RUN mkdir -p /go/src /go/bin /go/pkg && \
+    chown -R $USERNAME:$USERNAME /go
+
+# Switch to the non-root user
+USER $USERNAME
+
+# Set working directory
+WORKDIR /workspace

.devcontainer/devcontainer.json

@@ -0,0 +1,19 @@
+{
+	"name": "VCS Development Container",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+	"customizations": {
+		"vscode": {
+			"settings": {
+				"go.toolsManagement.checkForUpdates": "local",
+				"go.useLanguageServer": true
+			},
+			"extensions": [
+				"golang.go"
+			]
+		}
+	},
+	"postCreateCommand": "go mod download",
+	"remoteUser": "vscode"
+}

README.md

@@ -13,7 +13,7 @@ interface.
 Quick usage:
 
 	remote := "https://github.com/Masterminds/vcs"
-    local, _ := ioutil.TempDir("", "go-vcs")
+    local, _ := os.TempDir("", "go-vcs")
     repo, err := NewRepo(remote, local)
 
 In this case `NewRepo` will detect the VCS is Git and return a `GitRepo`. All of
@@ -39,6 +39,25 @@ The constructors have the same signature as `NewRepo`.
 
 For more details see [the documentation](https://godoc.org/github.com/Masterminds/vcs).
 
+## Development
+
+### Using Dev Container
+
+This project includes a [development container](https://containers.dev/) configuration that provides a complete development environment with all required version control tools (Git, Mercurial, Subversion, and Bazaar) pre-installed.
+
+To use the dev container:
+
+1. Install [Docker](https://www.docker.com/products/docker-desktop) and [Visual Studio Code](https://code.visualstudio.com/)
+2. Install the [Dev Containers extension](https://marketplace.visualstudio.com/items?itemName=ms-vscode-remote.remote-containers) for VS Code
+3. Open this repository in VS Code
+4. When prompted, click "Reopen in Container" (or use the command palette: "Dev Containers: Reopen in Container")
+
+The dev container is based on the SUSE BCI Golang image and includes:
+- Go development environment
+- Git, Mercurial (hg), Subversion (svn), and Bazaar (bzr)
+- Go language server and tools
+- All dependencies needed to run tests
+
 ## Motivation
 
 The package `golang.org/x/tools/go/vcs` provides some valuable functionality