Codespace/Devcontainer config.

.devcontainer/Dockerfile

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+
+FROM mcr.microsoft.com/devcontainers/universal:2 as go_builder
+RUN GOBIN=/usr/local/bin go install github.com/rogpeppe/go-internal/cmd/testscript@latest
+RUN GOBIN=/usr/local/bin go install github.com/go-task/task/v3/cmd/task@latest
+RUN GOBIN=/usr/local/bin go install github.com/golangci/golangci-lint/v2/cmd/golangci-lint@latest
+
+FROM mcr.microsoft.com/devcontainers/universal:2
+ENV DEBIAN_FRONTEND=noninteractive
+RUN set -eux; \
+    wget https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64 -O /usr/bin/yq; \
+    chmod +x /usr/bin/yq;
+COPY --from=go_builder /usr/local/bin/testscript /usr/local/bin/testscript
+COPY --from=go_builder /usr/local/bin/task /usr/local/bin/task
+COPY --from=go_builder /usr/local/bin/golangci-lint /usr/local/bin/golangci-lint

.devcontainer/devcontainer.env

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+TASK_X_REMOTE_TASKFILES=0

.devcontainer/devcontainer.json

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+{
+  "build": {
+    "dockerfile": "Dockerfile",
+    "context": ".."
+  },
+  "customizations": {
+    "vscode": {
+      "extensions": [
+        "editorconfig.editorconfig",
+        "golang.go",
+        "redhat.vscode-yaml",
+        "streetsidesoftware.code-spell-checker",
+        "task.vscode-task"
+      ]
+    }
+  },
+  "features": {},
+  "runArgs": [
+    "--env-file", ".devcontainer/devcontainer.env"
+  ],
+  "onCreateCommand": [],
+  "postCreateCommand": [],
+  "forwardPorts": [],
+  "portsAttributes": {}
+}