fix(docker/container): report assigned host ports, support extra hosts, stop disconnecting foreign networks

[Mkassabov]

Three independent Docker.Container bugs, each with a regression test that fails without its fix.

Assigned host port reported as 0 (#1388)

external: 0 means "any free host port". The create arg asked for host port 0 literally, and toContainerAttributes then overlaid the requested bindings on top of the assigned ones:

-p: news.ports?.map((port) => `${port.external}:${port.internal}/${port.protocol ?? "tcp"}`)
+// `-p 80/tcp` (random publish), not `-p 0:80/tcp`
+p: news.ports?.map((port) => isRandomHostPort(port.external) ? target : `${port.external}:${target}`)

-ports: { ...info.NetworkSettings.Ports, ...info.HostConfig.PortBindings }  // request wins
+ports: toPortAttributes(info)                                             // assignment wins

The request stays the fallback — a created-but-not-started container has empty NetworkSettings.Ports.

Before: expected 0 to be greater than 0.

No way to set extra hosts (#1387)

Added extraHosts?: string[], forwarded as --add-host:

Docker.Container("api", {
  image: "ghcr.io/acme/api:latest",
  extraHosts: ["host.docker.internal:host-gateway"],
});

Before: expected null to equal ArrayContaining [ "host.docker.internal:host-gateway" ].

Reconciliation disconnected foreign networks (#1386)

Removals were derived from every live network, so anything alchemy had not connected was torn off — including Docker's default bridge. They now come from olds.networks, the only record of what alchemy itself attached; the live container cannot say who connected a network.

Before, after dropping one managed network, the container was left with no networks at all: expected [ ] to contain "alchemy-test-foreign-network".

[alchemy-version-bot]

Install the packages built from this commit:

Alchemy

alchemy

bun add https://pkg.ing/alchemy/e2ee40e

@alchemy.run/better-auth

bun add https://pkg.ing/@alchemy.run/better-auth/e2ee40e

@alchemy.run/cloudflare-runtime

bun add https://pkg.ing/@alchemy.run/cloudflare-runtime/e2ee40e

@alchemy.run/frontend-frameworks

bun add https://pkg.ing/@alchemy.run/frontend-frameworks/e2ee40e

@alchemy.run/node-utils

bun add https://pkg.ing/@alchemy.run/node-utils/e2ee40e

@alchemy.run/pr-package

bun add https://pkg.ing/@alchemy.run/pr-package/e2ee40e

@alchemy.run/floci

bun add https://pkg.ing/@alchemy.run/floci/e2ee40e

Distilled

@distilled.cloud/core

bun add https://pkg.ing/@distilled.cloud/core/db3a1b5

@distilled.cloud/aws

bun add https://pkg.ing/@distilled.cloud/aws/db3a1b5

@distilled.cloud/axiom

bun add https://pkg.ing/@distilled.cloud/axiom/db3a1b5

@distilled.cloud/cloudflare

bun add https://pkg.ing/@distilled.cloud/cloudflare/db3a1b5

@distilled.cloud/hetzner

bun add https://pkg.ing/@distilled.cloud/hetzner/db3a1b5

@distilled.cloud/neon

bun add https://pkg.ing/@distilled.cloud/neon/db3a1b5

@distilled.cloud/planetscale

bun add https://pkg.ing/@distilled.cloud/planetscale/db3a1b5