update intro to bucc from docker-compose

Author: drnic

docs/basics/secret-parameters.md

@@ -8,37 +8,32 @@ Concourse supports Cloud Foundry Credhub and Hashicorp Vault. They have a common
 
 ## Redeploy Concourse with Credhub
 
-First, delete initial `tutorial` concourse:
+We will now switch from our `docker-compose up` deployment of Concourse to [bucc](https://github.com/starkandwayne/bucc) to deploy a local single VM version of Concourse that has the Credhub credentials manager. As a bonus, `bucc` will allow you to deploy a production-version of Concourse to any public or private cloud. In this tutorial we will deploy `bucc` to your local machine.
 
-```
-cd ../../..
-bosh delete-env manifests/concourse-lite.yml --state tmp/state.json
-```
-
-Now, switch to [bucc](https://github.com/starkandwayne/bucc) to deploy a local single VM version of Concourse that has the Credhub credentials manager.
+First, you need to install [VirtualBox](https://www.virtualbox.org/wiki/Downloads) (for the local deployment of `bucc`).
 
-In another terminal:
+Next:
 
-```
+```plain
 git clone https://github.com/starkandwayne/bucc ~/workspace/bucc
 cd ~/workspace/bucc
 ```
 
-Now run:
+Now run the following to deploy `bucc` to your local machine using VirtualBox:
 
-```
+```plain
 bucc up --lite
 ```
 
 If this fails with `command not found: bucc`, then perhaps you do not have [`direnv`](https://direnv.net/) installed. Never fear. Run to update your `$PATH` to add the `bin/bucc` command.
 
-```
+```plain
 source .envrc
 ```
 
 Now run:
 
-```
+```plain
 bucc up --lite
 ```
 
@@ -48,7 +43,7 @@ The `bucc up --lite` command is similar to `bosh create-env` but adds Credhub to
 
 To target and login to your new Concourse:
 
-```
+```plain
 bucc fly
 ```
 
@@ -58,15 +53,15 @@ The Concourse dashboard UI is now at https://192.168.50.6/
 
 To target and login to Credhub, the credentials manager included in `bucc`:
 
-```
+```plain
 bucc credhub
 ```
 
 ## Reauthentication
 
 Credhub will enthusiastically and frequently drop your login session:
 
-```
+```plain
 You are not currently authenticated. Please log in to continue.
 ```
 
@@ -78,22 +73,22 @@ Similarly, `fly -t bucc` sessions will timeout. To re-authenticate, return to `~
 
 Back in your main `concourse-tutorial` terminal window, return to the `tutorials/basic/parameters` folder, and install the pipeline from the preceding section to our new `bucc` concourse environment. Do not provide any explicit values for the parameters as these will come from the Credhub credentials manager:
 
-```
+```plain
 cd ../parameters
 fly -t bucc sp -p parameters -c pipeline.yml
 fly -t bucc up -p parameters
 ```
 
 ## Insert values into Credentials Manager
 
-```
+```plain
 credhub set -n /concourse/main/parameters/cat-name --type value --value garfield
 credhub set -n /concourse/main/parameters/dog-name --type value --value oddie
 ```
 
 Run the pipeline job to confirm that it dynamically fetched the secrets from Credhub:
 
-```
+```plain
 fly -t bucc trigger-job -j parameters/show-animal-names -w
 ```
 
@@ -106,7 +101,7 @@ When resolving a parameter such as `((cat-name))`, it will look in the following
 
 So, if the `((cat-name))` credential is to be shared across all pipelines in the `main` team, then the `credhub set` commands would become:
 
-```
+```plain
 credhub delete -n /concourse/main/parameters/cat-name
 credhub delete -n /concourse/main/parameters/dog-name
 credhub set -n /concourse/main/cat-name --type value --value garfield
@@ -115,15 +110,15 @@ credhub set -n /concourse/main/dog-name --type value --value oddie
 
 Again, run the pipeline job to confirm that it dynamically fetched the team's shared secrets from Credhub:
 
-```
+```plain
 fly -t bucc trigger-job -j parameters/show-animal-names -w
 ```
 
 ## Rotating Secrets
 
 A great feature of Concourse Credentials Manager - regardless if backed by Cloud Foundry Credhub or Hashicorp Vault - is that you can now update secrets/parameters and the new values will automatically be used the next time a job is run.
 
-```
+```plain
 credhub set -n /concourse/main/cat-name --type value --value milo
 credhub set -n /concourse/main/dog-name --type value --value otis
 
@@ -132,7 +127,7 @@ fly -t bucc trigger-job -j parameters/show-animal-names -w
 
 The output will include the two new parameter values:
 
-```
+```plain
 CAT_NAME=milo
 DOG_NAME=otis
 ```