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dagger/stdlib/os/container.cue

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CUE
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package os
import (
"strings"
"dagger.io/dagger"
"dagger.io/dagger/op"
"dagger.io/alpine"
)
// Default image for basic use cases
// FIXME: should just be 'alpine.#Image'.
// referring to '#.up' is a workaround to a dagger engine bug.
// see https://github.com/dagger/dagger/issues/304
#DefaultImage: alpine.#Image.#up
// Built-in container implementation, using buildkit
#Container: {
// Container image
image: dagger.#Artifact | *#DefaultImage
// {
// // Optionally fetch a remote image
// // eg. "index.docker.io/alpine"
// from: string
// image: #up: [op.#FetchContainer & { "ref": from }]
// } | {}
// Independently cacheable setup commands
setup: [...string]
// Command to execute
command: string | *""
// Environment variables shared by all commands
env: [string]: string
// Directory in which the command is executed
dir: string | *"/"
// If true, the command is never cached.
// (false by default).
always: true | *false
// Copy contents from other artifacts
copy: [string]: from: dagger.#Artifact
// Mount contents from other artifacts.
// Mount is active when executing `command`, but not `setup`.
mount: [string]: {
from: dagger.#Artifact
// FIXME: support source path
}
// Mount persistent cache directories
cache: [string]: true
// Mount temporary directories
tmpfs: [string]: true
// Configure the shell which executes all commands.
shell: {
// Path of the shell to execute
path: string | *"/bin/sh"
// Arguments to pass to the shell prior to the command
args: [...string] | *["-c"]
// Map of directories to search for commands
// In POSIX shells this is used to generate the $PATH
// environment variable.
search: [string]: bool
search: {
"/sbin": true
"/bin": true
"/usr/sbin": true
"/usr/bin": true
"/usr/local/sbin": true
"/usr/local/bin": true
}
}
env: PATH: string | *strings.Join([ for p, v in shell.search if v {p}], ":")
#up: [
op.#Load & {from: image},
// Copy volumes with type=copy
for dest, o in copy {
op.#Copy & {
"dest": dest
from: o.from
// FIXME: support source path
}
},
// Execute setup commands, without volumes
for cmd in setup {
op.#Exec & {
args: [shell.path] + shell.args + [cmd]
"env": env
"dir": dir
"always": always
}
},
// Execute main command with volumes
if command != "" {
op.#Exec & {
args: [shell.path] + shell.args + [command]
"env": env
"dir": dir
"always": always
"mount": {
for dest, o in mount {
"\(dest)": from: o.from
// FIXME: support source path
}
for dest in cache {
"\(dest)": "cache"
}
for dest in tmpfs {
"\(dest)": "tmpfs"
}
}
}
},
]
}