diff --git a/cli/cmd/deploy/cmd.go b/cli/cmd/deploy/cmd.go
index 7030c6a..f5ad917 100644
--- a/cli/cmd/deploy/cmd.go
+++ b/cli/cmd/deploy/cmd.go
@@ -36,14 +36,16 @@ be pushed to the organization "organization-slug-a3ecfh2b", and the app name
 }
 
 var (
-	slug    string
-	appName string
-	verbose bool
+	slug       string
+	appName    string
+	verbose    bool
+	appDir     string = "."
+	projectDir string = "."
 )
 
 func run(cmd *cobra.Command, args []string) {
 	service := app.New(gql.NewClient(), gql.NewSubscriptionClient(), http.DefaultClient)
-	err := Deploy(cmd.Context(), ".", slug, verbose, appName, service)
+	err := Deploy(cmd.Context(), service, appDir, projectDir, slug, appName, verbose)
 
 	if err != nil {
 		os.Exit(1)
@@ -57,6 +59,7 @@ func init() {
 	flags.StringVarP(&slug, "organization", "o", "", "The organization slug identifier. List available organizations with 'numerous organization list'.")
 	flags.StringVarP(&appName, "name", "n", "", "A unique name for the application to deploy.")
 	flags.BoolVarP(&verbose, "verbose", "v", false, "Display detailed information about the app deployment.")
+	flags.StringVarP(&projectDir, "project-dir", "p", "", "The project directory, which is the build context if using a custom Dockerfile.")
 
 	if err := DeployCmd.MarkFlagRequired("organization"); err != nil {
 		panic(err.Error())
diff --git a/cli/cmd/deploy/deploy.go b/cli/cmd/deploy/deploy.go
index 836afe5..f341224 100644
--- a/cli/cmd/deploy/deploy.go
+++ b/cli/cmd/deploy/deploy.go
@@ -33,7 +33,7 @@ var (
 	ErrInvalidAppName = errors.New("invalid app name")
 )
 
-func Deploy(ctx context.Context, dir string, slug string, verbose bool, appName string, apps AppService) error {
+func Deploy(ctx context.Context, apps AppService, appDir, projectDir, slug string, appName string, verbose bool) error {
 	if !validate.IsValidIdentifier(slug) {
 		output.PrintError("Error: Invalid organization %q.", "Must contain only lower-case alphanumerical characters and dashes.", slug)
 		return ErrInvalidSlug
@@ -45,7 +45,7 @@ func Deploy(ctx context.Context, dir string, slug string, verbose bool, appName
 	}
 
 	task := output.StartTask("Loading app configuration")
-	manifest, err := manifest.LoadManifest(filepath.Join(dir, manifest.ManifestPath))
+	manifest, err := manifest.LoadManifest(filepath.Join(appDir, manifest.ManifestPath))
 	if err != nil {
 		task.Error()
 		output.PrintErrorAppNotInitialized()
@@ -53,7 +53,7 @@ func Deploy(ctx context.Context, dir string, slug string, verbose bool, appName
 		return err
 	}
 
-	secrets := loadSecretsFromEnv(dir)
+	secrets := loadSecretsFromEnv(appDir)
 	task.Done()
 
 	task = output.StartTask("Registering new version")
@@ -74,8 +74,12 @@ func Deploy(ctx context.Context, dir string, slug string, verbose bool, appName
 	task.Done()
 
 	task = output.StartTask("Creating app archive")
-	tarPath := path.Join(dir, ".tmp_app_archive.tar")
-	err = archive.TarCreate(dir, tarPath, manifest.Exclude)
+	tarPath := path.Join(appDir, ".tmp_app_archive.tar")
+	tarSrcDir := appDir
+	if projectDir != "" {
+		tarSrcDir = projectDir
+	}
+	err = archive.TarCreate(tarSrcDir, tarPath, manifest.Exclude)
 	if err != nil {
 		task.Error()
 		output.PrintErrorDetails("Error archiving app source", err)
diff --git a/cli/cmd/deploy/deploy_test.go b/cli/cmd/deploy/deploy_test.go
index f68b132..57be4ed 100644
--- a/cli/cmd/deploy/deploy_test.go
+++ b/cli/cmd/deploy/deploy_test.go
@@ -25,8 +25,8 @@ func TestDeploy(t *testing.T) {
 	const deployVersionID = "deploy-version-id"
 
 	t.Run("give no existing app then happy path can run", func(t *testing.T) {
-		dir := t.TempDir()
-		copyTo(t, "../../testdata/streamlit_app", dir)
+		appDir := t.TempDir()
+		copyTo(t, "../../testdata/streamlit_app", appDir)
 
 		apps := &mockAppService{}
 		apps.On("ReadApp", mock.Anything, mock.Anything).Return(app.ReadAppOutput{}, app.ErrAppNotFound)
@@ -37,14 +37,14 @@ func TestDeploy(t *testing.T) {
 		apps.On("DeployApp", mock.Anything, mock.Anything).Return(app.DeployAppOutput{DeploymentVersionID: deployVersionID}, nil)
 		apps.On("DeployEvents", mock.Anything, mock.Anything).Return(nil)
 
-		err := Deploy(context.TODO(), dir, slug, false, appName, apps)
+		err := Deploy(context.TODO(), apps, appDir, "", slug, appName, false)
 
 		assert.NoError(t, err)
 	})
 
 	t.Run("give existing app then it does not create app", func(t *testing.T) {
-		dir := t.TempDir()
-		copyTo(t, "../../testdata/streamlit_app", dir)
+		appDir := t.TempDir()
+		copyTo(t, "../../testdata/streamlit_app", appDir)
 
 		apps := &mockAppService{}
 		apps.On("ReadApp", mock.Anything, mock.Anything).Return(app.ReadAppOutput{AppID: appID}, nil)
@@ -54,7 +54,7 @@ func TestDeploy(t *testing.T) {
 		apps.On("DeployApp", mock.Anything, mock.Anything).Return(app.DeployAppOutput{DeploymentVersionID: deployVersionID}, nil)
 		apps.On("DeployEvents", mock.Anything, mock.Anything).Return(nil)
 
-		err := Deploy(context.TODO(), dir, slug, false, appName, apps)
+		err := Deploy(context.TODO(), apps, appDir, "", slug, appName, false)
 
 		assert.NoError(t, err)
 	})
@@ -62,19 +62,19 @@ func TestDeploy(t *testing.T) {
 	t.Run("given dir without numerous.toml then it returns error", func(t *testing.T) {
 		dir := t.TempDir()
 
-		err := Deploy(context.TODO(), dir, slug, false, appName, nil)
+		err := Deploy(context.TODO(), nil, dir, "", slug, appName, false)
 
 		assert.EqualError(t, err, "open "+dir+"/numerous.toml: no such file or directory")
 	})
 
 	t.Run("given invalid slug then it returns error", func(t *testing.T) {
-		err := Deploy(context.TODO(), ".", "Some Invalid Organization Slug", false, appName, nil)
+		err := Deploy(context.TODO(), nil, ".", "", "Some Invalid Organization Slug", appName, false)
 
 		assert.ErrorIs(t, err, ErrInvalidSlug)
 	})
 
 	t.Run("given invalid app name then it returns error", func(t *testing.T) {
-		err := Deploy(context.TODO(), ".", slug, false, "Some Invalid App Name", nil)
+		err := Deploy(context.TODO(), nil, ".", "", slug, "Some Invalid App Name", false)
 
 		assert.ErrorIs(t, err, ErrInvalidAppName)
 	})
diff --git a/python/src/numerous/generated/graphql/input_types.py b/python/src/numerous/generated/graphql/input_types.py
index f25d994..d7168db 100644
--- a/python/src/numerous/generated/graphql/input_types.py
+++ b/python/src/numerous/generated/graphql/input_types.py
@@ -31,6 +31,7 @@ class AppCreateInfo(BaseModel):
 
 
 class AppDeployInput(BaseModel):
+    app_relative_path: Optional[str] = Field(alias="appRelativePath", default=None)
     secrets: Optional[List["AppSecret"]] = None
 
 
diff --git a/shared/schema.gql b/shared/schema.gql
index c08ddf3..0e03852 100644
--- a/shared/schema.gql
+++ b/shared/schema.gql
@@ -296,6 +296,7 @@ input AppCreateInfo {
 }
 
 input AppDeployInput {
+  appRelativePath: String
   secrets: [AppSecret!]
 }