Improve error message when target architecture doesn't match daemon

pkg/client/build.go

@@ -315,7 +315,7 @@ func (c *Client) Build(ctx context.Context, opts BuildOptions) error {
 			"Re-run with '--pull-policy=always' to silence this warning.")
 	}
 
-	if !opts.Publish && usesContainerdStorage(c.docker) {
+	if !opts.Publish && usesContainerdStorage(c.docker) && !logging.IsQuiet(c.logger) {
 		c.logger.Warnf("Exporting to docker daemon (building without --publish) and daemon uses containerd storage; performance may be significantly degraded.\n" +
 			"For more information, see https://github.com/buildpacks/pack/issues/2272.")
 	}

pkg/client/create_builder_test.go

@@ -1406,7 +1406,7 @@ func testCreateBuilder(t *testing.T, when spec.G, it spec.S) {
 							}
 
 							err := subject.CreateBuilder(context.TODO(), opts)
-							h.AssertError(t, err, "could not find a target that matches daemon os=linux and architecture=amd64")
+							h.AssertError(t, err, "the requested target(s)")
 						})
 					})
 
@@ -1463,7 +1463,7 @@ func testCreateBuilder(t *testing.T, when spec.G, it spec.S) {
 							}
 
 							err := subject.CreateBuilder(context.TODO(), opts)
-							h.AssertError(t, err, "could not find a target that matches daemon os=linux and architecture=arm64")
+							h.AssertError(t, err, "the requested target(s)")
 						})
 					})
 				})

pkg/client/package_buildpack.go

@@ -293,5 +293,21 @@ func (c *Client) daemonTarget(ctx context.Context, targets []dist.Target) (dist.
 			return t, nil
 		}
 	}
-	return dist.Target{}, errors.Errorf("could not find a target that matches daemon os=%s and architecture=%s", serverResult.Os, serverResult.Arch)
+	requestedTargets := ""
+	for i, t := range targets {
+		if i > 0 {
+			requestedTargets += ", "
+		}
+		if t.Arch != "" {
+			requestedTargets += fmt.Sprintf("%s/%s", t.OS, t.Arch)
+		} else {
+			requestedTargets += t.OS
+		}
+	}
+	return dist.Target{}, errors.Errorf(
+		"the requested target(s) %s do not match the local Docker daemon's os=%s and architecture=%s; "+
+			"to build for a different architecture, use the --publish flag to save the image to a registry instead of the daemon "+
+			"(a local registry can be used for testing purposes)",
+		style.Symbol(requestedTargets), style.Symbol(serverResult.Os), style.Symbol(serverResult.Arch),
+	)
 }

pkg/client/package_buildpack_test.go

@@ -893,7 +893,7 @@ func testPackageBuildpack(t *testing.T, when spec.G, it spec.S) {
 										Targets:    targets,
 										PullPolicy: image.PullNever,
 									})
-									h.AssertError(t, err, "could not find a target that matches daemon os=linux and architecture=amd64")
+									h.AssertError(t, err, "the requested target(s)")
 								})
 							})
 
@@ -1046,7 +1046,7 @@ func testPackageBuildpack(t *testing.T, when spec.G, it spec.S) {
 										Targets:    targets,
 										PullPolicy: image.PullNever,
 									})
-									h.AssertError(t, err, "could not find a target that matches daemon os=linux and architecture=arm64")
+									h.AssertError(t, err, "the requested target(s)")
 								})
 							})
 						})