package docker import ( "dagger.io/dagger" "dagger.io/dagger/core" ) // Modular build API for Docker containers #Build: { steps: [#Step, ...#Step] output: #Image // Generate build DAG from linear steps _dag: { for idx, step in steps { "\(idx)": step & { // connect input to previous output if idx > 0 { // FIXME: the intermediary `output` is needed because of a possible CUE bug. // `._dag."0".output: 1 errors in empty disjunction::` // See: https://github.com/cue-lang/cue/issues/1446 // input: _dag["\(idx-1)"].output _output: _dag["\(idx-1)"].output input: _output } } } } if len(_dag) > 0 { output: _dag["\(len(_dag)-1)"].output } } // A build step is anything that produces a docker image #Step: { input?: #Image output: #Image ... } // Build step that copies files into the container image #Copy: { input: #Image contents: dagger.#FS source: string | *"/" dest: string | *"/" // Optionally include certain files include: [...string] // Optionally exclude certain files exclude: [...string] // Execute copy operation _copy: core.#Copy & { "input": input.rootfs "contents": contents "source": source "dest": dest "include": include "exclude": exclude } output: #Image & { config: input.config rootfs: _copy.output } } // Build step that executes a Dockerfile #Dockerfile: { source: dagger.#FS // Dockerfile definition or path into source dockerfile: *{ path: string | *"Dockerfile" } | { contents: string } // Registry authentication // Key must be registry address auth: [registry=string]: { username: string secret: dagger.#Secret } platforms: [...string] target?: string buildArg: [string]: string label: [string]: string hosts: [string]: string _build: core.#Dockerfile & { "source": source "auth": auth "dockerfile": dockerfile "platforms": platforms if target != _|_ { "target": target } "buildArg": buildArg "label": label "hosts": hosts } output: #Image & { rootfs: _build.output config: _build.config } }