Allow --no-cache to be passed to docker

docs/content/en/schemas/v1beta10.json

@@ -729,6 +729,12 @@
           "description": "passed through to docker and overrides the network configuration of docker builder. If unset, use whatever is configured in the underlying docker daemon. Valid modes are `Host`: use the host's networking stack. `Bridge`: use the bridged network configuration. `None`: no networking in the container.",
           "x-intellij-html-description": "passed through to docker and overrides the network configuration of docker builder. If unset, use whatever is configured in the underlying docker daemon. Valid modes are <code>Host</code>: use the host's networking stack. <code>Bridge</code>: use the bridged network configuration. <code>None</code>: no networking in the container."
         },
+        "noCache": {
+          "type": "boolean",
+          "description": "used to pass in --no-cache to docker build to prevent caching.",
+          "x-intellij-html-description": "used to pass in --no-cache to docker build to prevent caching.",
+          "default": "false"
+        },
         "target": {
           "type": "string",
           "description": "Dockerfile target name to build.",
@@ -740,7 +746,8 @@
         "target",
         "buildArgs",
         "network",
-        "cacheFrom"
+        "cacheFrom",
+        "noCache"
       ],
       "additionalProperties": false,
       "description": "*beta* describes an artifact built from a Dockerfile, usually using `docker build`.",

pkg/skaffold/docker/image.go

@@ -161,6 +161,7 @@ func (l *localDaemon) Build(ctx context.Context, out io.Writer, workspace string
 		Target:      a.Target,
 		ForceRemove: l.forceRemove,
 		NetworkMode: a.NetworkMode,
+		NoCache:     a.NoCache,
 	})
 	if err != nil {
 		return "", errors.Wrap(err, "docker build")
@@ -368,5 +369,9 @@ func GetBuildArgs(a *latest.DockerArtifact) ([]string, error) {
 		args = append(args, "--network", strings.ToLower(a.NetworkMode))
 	}
 
+	if a.NoCache {
+		args = append(args, "--no-cache")
+	}
+
 	return args, nil
 }

pkg/skaffold/docker/image_test.go

@@ -227,6 +227,13 @@ func TestGetBuildArgs(t *testing.T) {
 			},
 			want: []string{"--network", "bridge"},
 		},
+		{
+			description: "no-cache",
+			artifact: &latest.DockerArtifact{
+				NoCache: true,
+			},
+			want: []string{"--no-cache"},
+		},
 		{
 			description: "all",
 			artifact: &latest.DockerArtifact{

pkg/skaffold/schema/latest/config.go

@@ -631,6 +631,9 @@ type DockerArtifact struct {
 	// CacheFrom lists the Docker images used as cache sources.
 	// For example: `["golang:1.10.1-alpine3.7", "alpine:3.7"]`.
 	CacheFrom []string `yaml:"cacheFrom,omitempty"`
+
+	// NoCache used to pass in --no-cache to docker build to prevent caching.
+	NoCache bool `yaml:"noCache,omitempty"`
 }
 
 // BazelArtifact *beta* describes an artifact built with [Bazel](https://bazel.build/).