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Add instructions for using locally built init filesystem. #1032

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Merged
jglogan merged 1 commit into from
Jan 9, 2026
Merged

Add instructions for using locally built init filesystem. #1032

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23 changes: 18 additions & 5 deletions BUILDING.md
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Expand Up @@ -71,13 +71,20 @@ to prepare your build environment.
> ```swift
> .package(path: "../containerization"),
> ```
5. Build `container`.

5. If you want `container` to use any changes you made in the `vminit` subproject of Containerization, update the system property to use the locally built init filesystem image:
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@dkovba dkovba Jan 9, 2026

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The name of the subproject is vminitd.


```bash
container system property set image.init vminit:latest
```

6. Build `container`.

```
make clean all
```

6. Restart the `container` services.
7. Restart the `container` services.

```
bin/container system stop
Expand All @@ -86,20 +93,26 @@ to prepare your build environment.

To revert to using the Containerization dependency from your `Package.swift`:

1. Use the Swift package manager to restore the normal `containerization` dependency and update your `Package.resolved` file. If you are using Xcode, revert your `Package.swift` change instead of using `swift package unedit`.
1. If you were using the local init filesystem, revert the system property to its default value:

```bash
container system property clear image.init
```

2. Use the Swift package manager to restore the normal `containerization` dependency and update your `Package.resolved` file. If you are using Xcode, revert your `Package.swift` change instead of using `swift package unedit`.

```bash
/usr/bin/swift package unedit containerization
/usr/bin/swift package update containerization
```

2. Rebuild `container`.
3. Rebuild `container`.

```bash
make clean all
```

3. Restart the `container` services.
4. Restart the `container` services.

```bash
bin/container system stop
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