feat(docker)!: include support for buildx

when the dockerPlatform array option is supplied and has a non zero
number of items, buildx will be used to build and push images rather
than the standard docker builder.

BREAKING CHANGE: images build with buildx will not be stored locally

Fixes: #44
Fixes: #33

lib/docker/image.js

@@ -20,6 +20,9 @@ class Image {
     , context = '.'
     , network = 'default'
     , quiet = true
+    , dry_run = false
+    , tags = []
+    , platform = []
     } = opts || {}
 
     if (!name || typeof name !== 'string') {
@@ -36,12 +39,20 @@ class Image {
     , dockerfile: dockerfile
     , flags: new Map()
     , name: name
+    , tags: tags
     , network: network
     , project: project
     , registry: registry
+    , dry_run: dry_run
+    , platform: array.toArray(platform)
     }
 
     if (quiet) this.flag('quiet', null)
+
+
+    for (const tag of this.tags) {
+      this.flag('tag', tag)
+    }
   }
 
   get id() {
@@ -102,6 +113,56 @@ class Image {
     return output
   }
 
+  get tags() {
+    const output = []
+    if (this.opts.dry_run) return output
+    for (const tag of this.opts.tags) {
+      output.push(
+        `${this.repo}:${tag}`
+      )
+    }
+
+    return output
+  }
+
+  get build_cmd() {
+    return [
+      'build'
+    , `--network=${this.network}`
+    , '--tag'
+    , this.name
+    , ...this.flags
+    , '-f'
+    , this.dockerfile
+    , this.context
+    ].filter(Boolean)
+  }
+
+  get buildx_cmd() {
+    if (!this.opts.platform?.length) return
+    this.opts.flags.delete('provenance') // incompatible with load/push
+    this.opts.flags.delete('output') // alias of load/push
+    this.opts.flags.delete('load')
+    this.opts.flags.set('platform', [this.opts.platform.join(',')])
+
+    this.flag('pull', null)
+    if (this.opts.dry_run) {
+      this.opts.flags.delete('push')
+    } else {
+      this.flag('push', null)
+    }
+
+    const cmd = this.build_cmd
+    cmd.unshift('buildx')
+
+    this.opts.flags.delete('platform')
+    this.opts.flags.delete('push')
+    this.opts.flags.delete('pull')
+    // remove the build id tag
+    cmd.splice(cmd.indexOf(this.name) - 1, 2)
+    return cmd
+  }
+
   arg(key, val = null) {
     if (val === true || val == null) { // eslint-disable-line no-eq-null
       this.flag('build-arg', key)
@@ -130,19 +191,6 @@ class Image {
     return this
   }
 
-  get build_cmd() {
-    return [
-      'build'
-    , `--network=${this.network}`
-    , '--tag'
-    , this.name
-    , ...this.flags
-    , '-f'
-    , this.dockerfile
-    , this.context
-    ].filter(Boolean)
-  }
-
   async run(cmd) {
     const stream = execa('docker', [
       'run'
@@ -159,7 +207,11 @@ class Image {
   }
 
   async build() {
-    const stream = execa('docker', this.build_cmd)
+    const cmd = this.opts.platform.length
+      ? this.buildx_cmd
+      : this.build_cmd
+
+    const stream = execa('docker', cmd)
     stream.stdout.pipe(process.stdout)
     stream.stderr.pipe(process.stderr)
     const {stdout, stderr} = await stream
@@ -174,6 +226,8 @@ class Image {
         return this.sha
       }
     }
+    this.sha = this.build_id
+    return this.sha
   }
 
   async tag(tag, push = true) {
@@ -187,14 +241,20 @@ class Image {
   }
 
   async push() {
-    await execa('docker', ['push', this.repo])
+    // push is a part of the buildx build operation
+    // At this point the tags have already been pushed.
+    // re-pushing manually is considered destructive
+    if (this.opts.platform.length) return
+
+    for (const tag of this.opts.tags) {
+      await this.tag(tag)
+    }
   }
 
   async clean() {
-    const images = execa('docker', ['images', this.repo, '-q'])
-    const rm = execa('xargs', ['docker', 'rmi', '-f'])
-    images.stdout.pipe(rm.stdin)
-    return rm
+    const {stdout: images} = await execa('docker', ['images', this.repo, '-q'])
+    if (!images) return
+    await execa('docker', ['rmi', '-f', ...images.split(os.EOL)])
   }
 }
 

lib/prepare.js

@@ -19,6 +19,8 @@ async function dockerPrepare(opts, context) {
   , context: opts.context
   , network: opts.network
   , quiet: opts.quiet
+  , platform: opts.platform
+  , dry_run: !!opts.dryRun
   })
 
   const vars = buildTemplateVars(opts, context)

lib/publish.js

@@ -8,25 +8,25 @@ module.exports = publish
 
 async function publish(opts, context) {
   const {cwd, logger} = context
+  const vars = buildTemplateVars(opts, context)
+  const tags = opts.tags.map((template) => {
+    return string.template(template)(vars)
+  }).filter(Boolean)
+
   const image = new docker.Image({
     registry: opts.registry
   , project: opts.project
   , name: opts.name
   , dockerfile: opts.dockerfile
   , build_id: opts.build
   , cwd: cwd
+  , tags: tags
   , context: opts.context
   , quiet: opts.quiet
   })
 
-  const vars = buildTemplateVars(opts, context)
-  const tags = opts.tags.map((template) => {
-    return string.template(template)(vars)
-  }).filter(Boolean)
 
   logger.info('tagging docker image', image.id)
-  for (const tag of tags) {
-    logger.info(`pushing image: ${image.repo} tag: ${tag}`)
-    await image.tag(tag, opts.publish)
-  }
+  if (!opts.publish) return
+  await image.push()
 }

lib/verify.js

@@ -33,6 +33,9 @@ async function verify(opts, context) {
   , cwd: cwd
   , context: opts.context
   , network: opts.network
+  , platform: opts.platform
+  , quiet: opts.quiet
+  , dry_run: !!opts.dryRun
   })
 
   debug('docker options', opts)

test/integration/release.js

@@ -35,10 +35,10 @@ test('docker release', async (t) => {
         ]
       }
     , devDependencies: {
-        'semantic-release': '*'
-      , '@semantic-release/commit-analyzer': '*'
-      , '@semantic-release/release-notes-generator': '*'
-      , '@semantic-release/npm': '*'
+        'semantic-release': '^19.0.0'
+      , '@semantic-release/commit-analyzer': '^9'
+      , '@semantic-release/release-notes-generator': '^10'
+      , '@semantic-release/npm': '^9'
       , '@codedependant/semantic-release-docker': 'file:../../../'
       }
     })