Fix yamllint error

.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

.github/workflows/release.yaml

@@ -1,5 +1,6 @@
+---
 name: "(Release) Release dev container templates"
-on:
+"on":
   workflow_dispatch:
   push:
     branches:

.github/workflows/test-pr.yaml

@@ -1,5 +1,6 @@
+---
 name: "PR - Test Updated Templates"
-on:
+"on":
   pull_request:
 
 jobs:
@@ -74,7 +75,7 @@ jobs:
           # Configure templates only if `devcontainer-template.json` contains the `options` property.
           optionProp=( $(jq -r '.options' devcontainer-template.json) )
 
-          if [ "${optionProp}" != "" ] && [ "${optionProp}" != "null" ] ; then  
+          if [ "${optionProp}" != "" ] && [ "${optionProp}" != "null" ] ; then
             options=( $(jq -r '.options | keys[]' devcontainer-template.json) )
 
             if [ "${options[0]}" != "" ] && [ "${options[0]}" != "null" ] ; then
@@ -101,7 +102,7 @@ jobs:
           template_id="${{ matrix.templates }}"
           src_dir="test/${template_id}"
 
-          if [ ! -d "$(pwd)/${src_dir}" ] ; then  
+          if [ ! -d "$(pwd)/${src_dir}" ] ; then
             echo "Template '${{ matrix.templates }}' is missing a test folder"
             exit 1
           fi
@@ -119,11 +120,11 @@ jobs:
           # Fake out existence of extensions, VS Code Server to validate extensions
           echo "(*) Stubbing out extensions and VS Code Server..."
 
-          # Configuring path for 'devcontainer.json' 
+          # Configuring path for 'devcontainer.json'
           dev_container_relative_path="src/${template_id}"
           dev_container_json_name=".devcontainer.json"
 
-          if [ -d "$(pwd)/${dev_container_relative_path}/.devcontainer" ] ; then  
+          if [ -d "$(pwd)/${dev_container_relative_path}/.devcontainer" ] ; then
             dev_container_relative_path="${dev_container_relative_path}/.devcontainer"
             dev_container_json_name="devcontainer.json"
           fi
@@ -136,7 +137,7 @@ jobs:
           # Fetching extensions list defined in 'devcontainer.json'
           extensions="$(jq '.extensions' --compact-output "${dev_container_tmp}" | tr -d '[' | tr -d ']' | tr ',' '\n' 2>/dev/null || echo -n '')"
 
-          # Stubbing extensions list for the tests validation with checkExtension() 
+          # Stubbing extensions list for the tests validation with checkExtension()
           devcontainer exec --workspace-folder "src/${template_id}/" --id-label ${id_label} /bin/sh -c "\
               mkdir -p \$HOME/.vscode-server/bin \$HOME/.vscode-server/extensions \
               && cd \$HOME/.vscode-server/extensions \

.github/workflows/update-documentation.yml

@@ -1,5 +1,6 @@
+---
 name: "Update Documentation"
-on:
+"on":
   push:
     branches:
       - main
@@ -54,4 +55,4 @@ jobs:
               -f body="$message" \
               -f head="$branch" \
               -f base='main'
-          fi
+          fi

src/alpine/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/anaconda-postgres/.devcontainer/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 version: '3.8'
 
 services:
@@ -6,7 +7,7 @@ services:
       context: ..
       dockerfile: .devcontainer/Dockerfile
     env_file:
-        - .env
+      - .env
 
     volumes:
       - ../..:/workspaces:cached
@@ -26,7 +27,7 @@ services:
     volumes:
       - postgres-data:/var/lib/postgresql/data
     env_file:
-        - .env
+      - .env
 
     # Add "forwardPorts": ["5432"] to **devcontainer.json** to forward PostgreSQL locally.
     # (Adding the "ports" property to this file will not forward from a Codespace.)

src/anaconda-postgres/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/anaconda-postgres/environment.yml

@@ -1,3 +1,4 @@
+---
 dependencies:
   - jupyter
   - matplotlib

src/anaconda/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/cpp-mariadb/.devcontainer/docker-compose.yml

@@ -1,3 +1,4 @@
+---
 version: '3.8'
 
 volumes:
@@ -20,7 +21,7 @@ services:
     # Runs app on the same network as the database container, allows "forwardPorts" in devcontainer.json function.
     network_mode: service:db
 
-    # Use "forwardPorts" in **devcontainer.json** to forward an app port locally. 
+    # Use "forwardPorts" in **devcontainer.json** to forward an app port locally.
     # (Adding the "ports" property to this file will not forward from a Codespace.)
 
   db:
@@ -30,5 +31,6 @@ services:
       - mariadb-data:/var/lib/MARIADB
     env_file:
       - .env
+
     # Add "forwardPorts": ["3306"] to **devcontainer.json** to forward DB locally.
     # (Adding the "ports" property to this file will not forward from a Codespace.)

src/cpp-mariadb/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/cpp/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/debian/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/docker-existing-docker-compose/.devcontainer/docker-compose.yml

@@ -1,9 +1,10 @@
+---
 version: '3.8'
 services:
   # Update this to the name of the service you want to work with in your docker-compose.yml file
   your-service-name-here:
-    # Uncomment if you want to override the service's Dockerfile to one in the .devcontainer 
-    # folder. Note that the path of the Dockerfile and context is relative to the *primary* 
+    # Uncomment if you want to override the service's Dockerfile to one in the .devcontainer
+    # folder. Note that the path of the Dockerfile and context is relative to the *primary*
     # docker-compose.yml file (the first in the devcontainer.json "dockerComposeFile"
     # array). The sample below assumes your primary file is in the root of your project.
     #
@@ -23,4 +24,3 @@ services:
 
     # Overrides default command so things don't shut down after the process ends.
     command: sleep infinity
-

src/docker-existing-docker-compose/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/docker-existing-dockerfile/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/docker-in-docker/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/docker-outside-of-docker-compose/.devcontainer/docker-compose.yml

@@ -1,26 +1,27 @@
+---
 version: '3'
 
 services:
   app:
-    build: 
+    build:
       context: .
       dockerfile: Dockerfile
 
     volumes:
       # Forwards the local Docker socket to the container.
-      - /var/run/docker.sock:/var/run/docker-host.sock 
+      - /var/run/docker.sock:/var/run/docker-host.sock
       # Update this to wherever you want VS Code to mount the folder of your project
       - ../..:/workspaces:cached
 
     # Overrides default command so things don't shut down after the process ends.
     entrypoint: /usr/local/share/docker-init.sh
-    command: sleep infinity 
+    command: sleep infinity
 
     # Uncomment the next four lines if you will use a ptrace-based debuggers like C++, Go, and Rust.
     # cap_add:
     #  - SYS_PTRACE
     # security_opt:
     #   - seccomp:unconfined
 
-    # Use "forwardPorts" in **devcontainer.json** to forward an app port locally. 
+    # Use "forwardPorts" in **devcontainer.json** to forward an app port locally.
     # (Adding the "ports" property to this file will not forward from a Codespace.)

src/docker-outside-of-docker-compose/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/docker-outside-of-docker/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/dotnet-fsharp/.github/dependabot.yml

@@ -3,10 +3,10 @@
 # Please see the documentation for more information:
 # https://docs.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
 # https://containers.dev/guide/dependabot
-
+---
 version: 2
 updates:
- - package-ecosystem: "devcontainers"
-   directory: "/"
-   schedule:
-     interval: weekly
+  - package-ecosystem: "devcontainers"
+    directory: "/"
+    schedule:
+      interval: weekly

src/dotnet-mssql/.devcontainer/docker-compose.yml

@@ -1,8 +1,9 @@
+---
 version: '3'
 
 services:
   app:
-    build: 
+    build:
       context: .
       dockerfile: Dockerfile
 
@@ -18,7 +19,7 @@ services:
     # Uncomment to connect as root instead. More info: https://aka.ms/dev-containers-non-root.
     # user: root
 
-    # Use "forwardPorts" in **devcontainer.json** to forward an app port locally. 
+    # Use "forwardPorts" in **devcontainer.json** to forward an app port locally.
     # (Adding the "ports" property to this file will not forward from a Codespace.)
 
   db: