missing-build-dockerfile
disallow a devcontainer.json “build” object that is missing “dockerfile”
Why
“build.dockerfile” is the only required member of “build”: it locates, relative to the devcontainer.json, the Dockerfile the image is built from. The other members (“context”, “args”, “target”, …) only shape a build that “dockerfile” defines, so without it there is nothing to build.
Bad
{
"name": "my project",
"build": {
"context": ".."
}
}
Good
{
"name": "my project",
"build": {
"dockerfile": "Dockerfile",
"context": ".."
}
}