Support args on project.v0 and dockerfile.v0 resources

We allow binding expressions to refer to properties of other
resources, but we fail if any of these values are secrets (since ACA
has no way to treat these as ACA or KeyVault secrets and reference
them). If we detect this case, we fail and encourage the user to pass
these values via environment variaibles.

Fixes #3678

cli/azd/pkg/apphost/generate.go

@@ -100,6 +100,7 @@ func Dockerfiles(manifest *Manifest) map[string]genDockerfile {
 				Env:       comp.Env,
 				Bindings:  comp.Bindings,
 				BuildArgs: comp.BuildArgs,
+				Args:      comp.Args,
 			}
 		}
 	}
@@ -451,7 +452,7 @@ func (b *infraGenerator) LoadManifest(m *Manifest) error {
 		case "azure.appinsights.v0":
 			b.addAppInsights(name)
 		case "project.v0":
-			b.addProject(name, *comp.Path, comp.Env, comp.Bindings)
+			b.addProject(name, *comp.Path, comp.Env, comp.Bindings, comp.Args)
 		case "container.v0":
 			b.addContainer(name, *comp.Image, comp.Env, comp.Bindings, comp.Inputs, comp.Volumes)
 		case "dapr.v0":
@@ -465,7 +466,7 @@ func (b *infraGenerator) LoadManifest(m *Manifest) error {
 				return err
 			}
 		case "dockerfile.v0":
-			b.addDockerfile(name, *comp.Path, *comp.Context, comp.Env, comp.Bindings, comp.BuildArgs)
+			b.addDockerfile(name, *comp.Path, *comp.Context, comp.Env, comp.Bindings, comp.BuildArgs, comp.Args)
 		case "redis.v0":
 			b.addContainerAppService(name, RedisContainerAppService)
 		case "azure.keyvault.v0":
@@ -755,7 +756,7 @@ func (b *infraGenerator) addSqlDatabase(sqlAccount, dbName string) {
 }
 
 func (b *infraGenerator) addProject(
-	name string, path string, env map[string]string, bindings custommaps.WithOrder[Binding],
+	name string, path string, env map[string]string, bindings custommaps.WithOrder[Binding], args []string,
 ) {
 	b.requireCluster()
 	b.requireContainerRegistry()
@@ -764,6 +765,7 @@ func (b *infraGenerator) addProject(
 		Path:     path,
 		Env:      env,
 		Bindings: bindings,
+		Args:     args,
 	}
 }
 
@@ -932,6 +934,7 @@ func (b *infraGenerator) addDaprStateStoreComponent(name string) {
 func (b *infraGenerator) addDockerfile(
 	name string, path string, context string, env map[string]string,
 	bindings custommaps.WithOrder[Binding], buildArgs map[string]string,
+	args []string,
 ) {
 	b.requireCluster()
 	b.requireContainerRegistry()
@@ -942,6 +945,7 @@ func (b *infraGenerator) addDockerfile(
 		Env:       env,
 		Bindings:  bindings,
 		BuildArgs: buildArgs,
+		Args:      args,
 	}
 }
 
@@ -1063,6 +1067,10 @@ func (b *infraGenerator) Compile() error {
 			return fmt.Errorf("configuring environment for resource %s: %w", resourceName, err)
 		}
 
+		if err := b.buildArgsBlock(docker.Args, &projectTemplateCtx); err != nil {
+			return err
+		}
+
 		b.containerAppTemplateContexts[resourceName] = projectTemplateCtx
 	}
 
@@ -1101,6 +1109,10 @@ func (b *infraGenerator) Compile() error {
 			return err
 		}
 
+		if err := b.buildArgsBlock(project.Args, &projectTemplateCtx); err != nil {
+			return err
+		}
+
 		b.containerAppTemplateContexts[resourceName] = projectTemplateCtx
 	}
 
@@ -1471,6 +1483,64 @@ func urlPortFromTargetPort(binding *Binding, bindingMappedToMainIngress bool) (s
 	return acaTemplatedTargetPort, nil
 }
 
+// asYamlString converts a string to the YAML representation of the string, ensuring that it is quoted and escaped as needed.
+func asYamlString(s string) (string, error) {
+	// We want to ensure that we render these values in the YAML as strings.  If `res` was the string "true"
+	// (without the quotes), we would naturally create a value directive in yaml that looks like this:
+	//
+	// - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EXCEPTION_LOG_ATTRIBUTES
+	//   value: true
+	//
+	// And YAML rules would treat the above as the value being a boolean instead of a string, which the container
+	// app service expects.
+	//
+	// YAML marshalling the string value will give us something like `"true"` (with the quotes, and any escaping
+	// that needs to be done), which is what we want here.
+	// Do not use JSON marshall as it would escape the quotes within the string, breaking the meaning of the value.
+	// yaml marshall will use 'some text "quoted" more text' as a valid yaml string.
+	yamlString, err := yaml.Marshal(s)
+	if err != nil {
+		return "", fmt.Errorf("marshalling env value: %w", err)
+	}
+
+	// remove the trailing newline. yaml marshall will add a newline at the end of the string, as the new line is
+	// expected at the end of the yaml document. But we are getting a single value with valid yaml here, so we don't
+	// need the newline
+	return string(yamlString[0 : len(yamlString)-1]), nil
+}
+
+func (b *infraGenerator) buildArgsBlock(args []string, manifestCtx *genContainerAppManifestTemplateContext) error {
+	for argN, arg := range args {
+		resolvedArg, err := EvalString(arg, func(s string) (string, error) { return b.evalBindingRef(s, inputEmitTypeYaml) })
+		if err != nil {
+			return fmt.Errorf("evaluating value for argument %d: %w", argN, err)
+		}
+
+		// Unlike environment variables, ACA doesn't provide a way to pass secret values without baking them into the args
+		// array directly. We don't want folks to accidentally bake the plaintext value of these secrets into the container
+		// definition, so for now, we block this.
+		//
+		// This logic is similar to what we do in buildEnvBlock to detect when we need to take values and treat them as ACA
+		// secrets.
+		if strings.Contains(arg, ".connectionString}") ||
+			strings.Contains(resolvedArg, "{{ connectionString") ||
+			strings.Contains(resolvedArg, "{{ securedParameter ") ||
+			strings.Contains(resolvedArg, "{{ secretOutput ") {
+
+			return fmt.Errorf("argument %d cannot contain connection strings, secured parameters, or secret outputs. Use "+
+				"environment variables instead", argN)
+		}
+
+		yamlString, err := asYamlString(resolvedArg)
+		if err != nil {
+			return fmt.Errorf("marshalling arg value: %w", err)
+		}
+		manifestCtx.Args = append(manifestCtx.Args, yamlString)
+	}
+
+	return nil
+}
+
 // buildEnvBlock creates the environment map in the template context. It does this by copying the values from the given map,
 // evaluating any binding expressions that are present. It writes the result of the evaluation after calling json.Marshal
 // so the values may be emitted into YAML as is without worrying about escaping.
@@ -1481,29 +1551,11 @@ func (b *infraGenerator) buildEnvBlock(env map[string]string, manifestCtx *genCo
 			return fmt.Errorf("evaluating value for %s: %w", k, err)
 		}
 
-		// We want to ensure that we render these values in the YAML as strings.  If `res` was the string "true"
-		// (without the quotes), we would naturally create a value directive in yaml that looks like this:
-		//
-		// - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EXCEPTION_LOG_ATTRIBUTES
-		//   value: true
-		//
-		// And YAML rules would treat the above as the value being a boolean instead of a string, which the container
-		// app service expects.
-		//
-		// YAML marshalling the string value will give us something like `"true"` (with the quotes, and any escaping
-		// that needs to be done), which is what we want here.
-		// Do not use JSON marshall as it would escape the quotes within the string, breaking the meaning of the value.
-		// yaml marshall will use 'some text "quoted" more text' as a valid yaml string.
-		yamlString, err := yaml.Marshal(res)
+		resolvedValue, err := asYamlString(res)
 		if err != nil {
 			return fmt.Errorf("marshalling env value: %w", err)
 		}
 
-		// remove the trailing newline. yaml marshall will add a newline at the end of the string, as the new line is
-		// expected at the end of the yaml document. But we are getting a single value with valid yaml here, so we don't
-		// need the newline
-		resolvedValue := string(yamlString[0 : len(yamlString)-1])
-
 		// connectionString detection, either of:
 		//  a) explicit connection string key for env, like "ConnectionStrings__resource": "XXXXX"
 		//  b) a connection string field references in the value, like "FOO": "{resource.connectionString}"

cli/azd/pkg/apphost/generate_test.go

@@ -26,6 +26,9 @@ var aspireDockerManifest []byte
 //go:embed testdata/aspire-storage.json
 var aspireStorageManifest []byte
 
+//go:embed testdata/aspire-args.json
+var aspireArgsManifest []byte
+
 //go:embed testdata/aspire-bicep.json
 var aspireBicepManifest []byte
 
@@ -212,6 +215,25 @@ func TestAspireDockerGeneration(t *testing.T) {
 	require.NoError(t, err)
 }
 
+func TestAspireArgsGeneration(t *testing.T) {
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping due to EOL issues on Windows with the baselines")
+	}
+
+	ctx := context.Background()
+	mockCtx := mocks.NewMockContext(ctx)
+	mockPublishManifest(mockCtx, aspireArgsManifest, nil)
+	mockCli := dotnet.NewDotNetCli(mockCtx.CommandRunner)
+
+	m, err := ManifestFromAppHost(ctx, filepath.Join("testdata", "AspireArgs.AppHost.csproj"), mockCli, "")
+	require.NoError(t, err)
+
+	manifest, err := ContainerAppManifestTemplateForProject(m, "apiservice", false)
+	require.NoError(t, err)
+
+	snapshot.SnapshotT(t, manifest)
+}
+
 func TestAspireContainerGeneration(t *testing.T) {
 	if runtime.GOOS == "windows" {
 		t.Skip("Skipping due to EOL issues on Windows with the baselines")

cli/azd/pkg/apphost/generate_types.go

@@ -70,11 +70,13 @@ type genDockerfile struct {
 	Env       map[string]string
 	Bindings  custommaps.WithOrder[Binding]
 	BuildArgs map[string]string
+	Args      []string
 }
 
 type genProject struct {
 	Path     string
 	Env      map[string]string
+	Args     []string
 	Bindings custommaps.WithOrder[Binding]
 }
 
@@ -154,6 +156,7 @@ type genContainerAppManifestTemplateContext struct {
 	KeyVaultSecrets             map[string]string
 	Dapr                        *genContainerAppManifestTemplateContextDapr
 	AutoConfigureDataProtection bool
+	Args                        []string
 }
 
 type genProjectFileContext struct {

cli/azd/pkg/apphost/manifest.go

@@ -36,6 +36,9 @@ type Resource struct {
 	// BuildArgs is present on a dockerfile.v0 resource and is the --build-arg for building the docker image.
 	BuildArgs map[string]string `json:"buildArgs,omitempty"`
 
+	// Args is optionally present on project.v0 and dockerfile.v0 resources and are the arguments to pass to the container.
+	Args []string `json:"args,omitempty"`
+
 	// Parent is present on a resource which is a child of another. It is the name of the parent resource. For example, a
 	// postgres.database.v0 is a child of a postgres.server.v0, and so it would have a parent of which is the name of
 	// the server resource.

cli/azd/pkg/apphost/testdata/TestAspireArgsGeneration.snap

@@ -0,0 +1,44 @@
+location: {{ .Env.AZURE_LOCATION }}
+identity:
+  type: UserAssigned
+  userAssignedIdentities:
+    ? "{{ .Env.AZURE_CONTAINER_REGISTRY_MANAGED_IDENTITY_ID }}"
+    : {}
+properties:
+  environmentId: {{ .Env.AZURE_CONTAINER_APPS_ENVIRONMENT_ID }}
+  configuration:
+    activeRevisionsMode: single
+    ingress:
+      external: false
+      targetPort: {{ targetPortOrDefault 8080 }}
+      transport: http
+      allowInsecure: true
+    registries:
+      - server: {{ .Env.AZURE_CONTAINER_REGISTRY_ENDPOINT }}
+        identity: {{ .Env.AZURE_CONTAINER_REGISTRY_MANAGED_IDENTITY_ID }}
+  template:
+    containers:
+      - image: {{ .Image }}
+        name: apiservice
+        args:
+          - --supports-args
+          - "true"
+          - --port
+          - "12345"
+        env:
+          - name: AZURE_CLIENT_ID
+            value: {{ .Env.MANAGED_IDENTITY_CLIENT_ID }}
+          - name: ASPNETCORE_FORWARDEDHEADERS_ENABLED
+            value: "true"
+          - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EVENT_LOG_ATTRIBUTES
+            value: "true"
+          - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EXCEPTION_LOG_ATTRIBUTES
+            value: "true"
+          - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_RETRY
+            value: in_memory
+    scale:
+      minReplicas: 1
+tags:
+  azd-service-name: apiservice
+  aspire-resource-name: apiservice
+

cli/azd/pkg/apphost/testdata/TestAspireBicepGeneration-frontend.snap

@@ -14,8 +14,8 @@ properties:
       transport: http
       allowInsecure: true
     registries:
-    - server: {{ .Env.AZURE_CONTAINER_REGISTRY_ENDPOINT }}
-      identity: {{ .Env.AZURE_CONTAINER_REGISTRY_MANAGED_IDENTITY_ID }}
+      - server: {{ .Env.AZURE_CONTAINER_REGISTRY_ENDPOINT }}
+        identity: {{ .Env.AZURE_CONTAINER_REGISTRY_MANAGED_IDENTITY_ID }}
     secrets:
       - name: applicationinsights-connection-string
         value: '{{ .Env.AI_APPINSIGHTSCONNECTIONSTRING }}'
@@ -27,27 +27,27 @@ properties:
         value: '{{ .Env.S_B_SERVICEBUSENDPOINT }}'
   template:
     containers:
-    - image: {{ .Image }}
-      name: frontend
-      env:
-      - name: AZURE_CLIENT_ID
-        value: {{ .Env.MANAGED_IDENTITY_CLIENT_ID }}
-      - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EVENT_LOG_ATTRIBUTES
-        value: "true"
-      - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EXCEPTION_LOG_ATTRIBUTES
-        value: "true"
-      - name: bicepValue0
-        value: '{{ .Env.TEST_VAL0 }}'
-      - name: bicepValue_test
-        value: '{{ .Env.TEST_TEST }}'
-      - name: APPLICATIONINSIGHTS_CONNECTION_STRING
-        secretRef: applicationinsights-connection-string
-      - name: ConnectionStrings__db
-        secretRef: connectionstrings--db
-      - name: ConnectionStrings__db2
-        secretRef: connectionstrings--db2
-      - name: ConnectionStrings__s-b
-        secretRef: connectionstrings--s-b
+      - image: {{ .Image }}
+        name: frontend
+        env:
+          - name: AZURE_CLIENT_ID
+            value: {{ .Env.MANAGED_IDENTITY_CLIENT_ID }}
+          - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EVENT_LOG_ATTRIBUTES
+            value: "true"
+          - name: OTEL_DOTNET_EXPERIMENTAL_OTLP_EMIT_EXCEPTION_LOG_ATTRIBUTES
+            value: "true"
+          - name: bicepValue0
+            value: '{{ .Env.TEST_VAL0 }}'
+          - name: bicepValue_test
+            value: '{{ .Env.TEST_TEST }}'
+          - name: APPLICATIONINSIGHTS_CONNECTION_STRING
+            secretRef: applicationinsights-connection-string
+          - name: ConnectionStrings__db
+            secretRef: connectionstrings--db
+          - name: ConnectionStrings__db2
+            secretRef: connectionstrings--db2
+          - name: ConnectionStrings__s-b
+            secretRef: connectionstrings--s-b
     scale:
       minReplicas: 1
 tags: