Minor contribute updates (#19752)

* Minor contribute updates

* Minor contribute updates

Author: aevesdocker

content/contribute/components/badges.md

@@ -16,6 +16,12 @@ You can also make a badge a link.
 
 [{{< badge color="blue" text="badge with a link" >}}](../_index.md)
 
+### Usage guidelines
+
+We use the violet badge to highlight new content in our docs: {{< badge color=violet text="New" >}} 
+
+Best practice is to use this badge for no longer than 2 months post release of the feature.
+
 ### Markup
 
 ```go

content/contribute/components/call-outs.md

@@ -6,6 +6,7 @@ toc_max: 3
 
 We support these broad categories of callouts:
 
+- Version callouts
 - Notes (no HTML attribute required)
 - Tips, which use the `{ .tip }` class
 - Important, which use the `{ .important }` class
@@ -15,6 +16,8 @@ We support these broad categories of callouts:
 
 ## Examples
 
+{{< introduced buildx 0.10.4 "../../release-notes.md#0104" >}}
+
 > **Note**
 >
 > Note the way the `get_hit_count` function is written. This basic retry
@@ -62,7 +65,11 @@ For both of the following callouts, consult [the Docker release lifecycle](/rele
 > product.
 { .restricted}
 
-## HTML
+## Formatting 
+
+```go
+{{</* introduced buildx 0.10.4 "../../release-notes.md#0104" */>}}
+```
 
 ```html
 > **Note**

content/contribute/components/code-blocks.md

@@ -50,6 +50,48 @@ incoming := map[string]interface{}{
 ```
 ````
 
+## Collapsible code blocks
+
+```dockerfile {collapse=true}
+# syntax=docker/dockerfile:1
+
+ARG GO_VERSION="1.21"
+
+FROM golang:${GO_VERSION}-alpine AS base
+ENV CGO_ENABLED=0
+ENV GOPRIVATE="github.com/foo/*"
+RUN apk add --no-cache file git rsync openssh-client
+RUN mkdir -p -m 0700 ~/.ssh && ssh-keyscan github.com >> ~/.ssh/known_hosts
+WORKDIR /src
+
+FROM base AS vendor
+# this step configure git and checks the ssh key is loaded
+RUN --mount=type=ssh <<EOT
+  set -e
+  echo "Setting Git SSH protocol"
+  git config --global url."[email protected]:".insteadOf "https://github.com/"
+  (
+    set +e
+    ssh -T [email protected]
+    if [ ! "$?" = "1" ]; then
+      echo "No GitHub SSH key loaded exiting..."
+      exit 1
+    fi
+  )
+EOT
+# this one download go modules
+RUN --mount=type=bind,target=. \
+    --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=ssh \
+    go mod download -x
+
+FROM vendor AS build
+RUN --mount=type=bind,target=. \
+    --mount=type=cache,target=/go/pkg/mod \
+    --mount=type=cache,target=/root/.cache \
+    go build ...
+```
+
 ## Bash
 
 Use the `bash` language code block when you want to show a Bash script: