Add bash completion for docker cli.

Author: guzman-raphael

.devcontainer/Dockerfile

@@ -4,3 +4,7 @@ FROM mcr.microsoft.com/devcontainers/base:bullseye
 # [Optional] Uncomment this section to install additional OS packages.
 # RUN apt-get update && export DEBIAN_FRONTEND=noninteractive \
 #     && apt-get -y install --no-install-recommends <your-package-list-here>
+
+RUN \
+    apt update && \
+    apt-get install bash-completion -y

.devcontainer/devcontainer.json

@@ -1,5 +1,4 @@
 // For format details, see https://aka.ms/devcontainer.json. For config options, see the
-// README at: https://github.com/devcontainers/templates/tree/main/src/docker-outside-of-docker-compose
 {
 	"name": "Development",
 	"dockerComposeFile": "docker-compose.yaml",
@@ -9,6 +8,7 @@
 	"remoteEnv": {
 		"LOCAL_WORKSPACE_FOLDER": "${localWorkspaceFolder}"
 	},
+	// https://containers.dev/features
 	"features": {
 		"ghcr.io/devcontainers/features/docker-in-docker:2": {},
 		"ghcr.io/devcontainers/features/git:1": {},