[BUG][Promptflow SDK& CLI] docker build build is confusing (#379)

# Description

Please add an informative description that covers that changes made by
the pull request and link all relevant issues.

# All Promptflow Contribution checklist:
- [ ] **The pull request does not introduce [breaking changes]**
- [ ] **CHANGELOG is updated for new features, bug fixes or other
significant changes.**
- [ ] **I have read the [contribution guidelines](../CONTRIBUTING.md).**

## General Guidelines and Best Practices
- [ ] Title of the pull request is clear and informative.
- [ ] There are a small number of commits, each of which have an
informative message. This means that previously merged commits do not
appear in the history of the PR. For more information on cleaning up the
commits in your PR, [see this
page](https://github.com/Azure/azure-powershell/blob/master/documentation/development-docs/cleaning-up-commits.md).

### Testing Guidelines
- [ ] Pull request includes test coverage for the included changes.

---------

Co-authored-by: Ying Chen <[email protected]>

docs/cloud/azureai/deploy-to-azure-appservice.md

@@ -10,7 +10,7 @@ This example demos how to deploy [web-classification](https://github.com/microso
 Use the command below to build a flow as docker format app:
 
 ```bash
-pf flow build --source ../../flows/standard/web-classification --output build --format docker
+pf flow build --source ../../flows/standard/web-classification --output dist --format docker
 ```
 
 Note that all dependent connections must be created before building as docker.
@@ -27,7 +27,7 @@ The two scripts will do the following things:
 :::{tab-item} Bash
 Example command to use bash script:
 ```shell
-bash deploy.sh --path build -i <image_tag> --name my_app_23d8m -r <docker registery> -g <resource_group>
+bash deploy.sh --path dist -i <image_tag> --name my_app_23d8m -r <docker registery> -g <resource_group>
 ```
 See the full parameters by `bash deploy.sh -h`.
 :::

docs/how-to-guides/deploy-a-flow/deploy-using-docker.md

@@ -53,7 +53,7 @@ refer to [Setup connection for web-classifiction](https://github.com/microsoft/p
 Use the command below to build a flow as docker format app:
 
 ```bash
-pf flow build --source ../../flows/standard/web-classification --output build --format docker
+pf flow build --source ../../flows/standard/web-classification --output dist --format docker
 ```
 
 Note that all dependent connections must be created before exporting as docker.
@@ -65,7 +65,7 @@ Like other Dockerfile, you need to build the image first. You can tag the image
 Run the command below to build image:
 
 ```bash
-docker build build -t web-classification-serve
+docker build dist -t web-classification-serve
 ```
 
 ### Run Docker image

examples/tutorials/e2e-development/chat-with-pdf.md

@@ -310,7 +310,7 @@ the other choices, please refer to [flow deploy docs](https://microsoft.github.i
 Use the command below to build a flow as docker format app:
 
 ```bash
-pf flow build --source . --output build --format docker
+pf flow build --source . --output dist --format docker
 ```
 
 ### Deploy with Docker
@@ -321,7 +321,7 @@ Like other Dockerfile, you need to build the image first. You can tag the image
 Run the command below to build image:
 
 ```shell
-docker build build -t chat-with-pdf-serve
+docker build dist -t chat-with-pdf-serve
 ```
 
 #### Run Docker image

examples/tutorials/flow-deploy/azure-app-service/README.md

@@ -18,7 +18,7 @@ pf connection create --file ../../../connections/azure_openai.yml --set api_key=
 Use the command below to build a flow as docker format app:
 
 ```bash
-pf flow build --source ../../../flows/standard/web-classification --output build --format docker
+pf flow build --source ../../../flows/standard/web-classification --output dist --format docker
 ```
 
 
@@ -32,7 +32,7 @@ The two scripts will do the following things:
 
 Example command to use bash script:
 ```shell
-bash deploy.sh --path build -i <image_tag> --name my_app_23d8m -r <docker registery> -g <resource_group>
+bash deploy.sh --path dist -i <image_tag> --name my_app_23d8m -r <docker registery> -g <resource_group>
 ```
 
 Example command to use powershell script:

examples/tutorials/flow-deploy/docker/README.md

@@ -14,7 +14,7 @@ pf connection create --file ../../../connections/azure_openai.yml --set api_key=
 Use the command below to build a flow as docker format app:
 
 ```bash
-pf flow build --source ../../../flows/standard/web-classification --output build --format docker
+pf flow build --source ../../../flows/standard/web-classification --output dist --format docker
 ```
 
 ## Deploy with Docker
@@ -25,7 +25,7 @@ Like other Dockerfile, you need to build the image first. You can tag the image
 Run the command below to build image:
 
 ```shell
-docker build build -t web-classification-serve
+docker build dist -t web-classification-serve
 ```
 
 ### Run Docker image

examples/tutorials/flow-deploy/kubernetes/README.md

@@ -15,7 +15,7 @@ pf connection create --file ../../../connections/azure_openai.yml --set api_key=
 Use the command below to build a flow as docker format app:
 
 ```bash
-pf flow build --source ../../../flows/standard/web-classification --output build --format docker
+pf flow build --source ../../../flows/standard/web-classification --output dist --format docker
 ```
 
 ## Deploy with Kubernetes
@@ -26,7 +26,7 @@ Like other Dockerfile, you need to build the image first. You can tag the image
 Then run the command below:
 
 ```shell
-cd build
+cd dist
 docker build . -t web-classification-serve
 ```