test: use ubuntu in docker images

Author: aminya

README.md

@@ -178,8 +178,7 @@ jobs:
 Here is an example for using setup_cpp to make a builder image that has the Cpp tools you need.
 
 ```dockerfile
-# debian
-FROM debian:bullseye
+FROM ubuntu:devel
 
 # add setup_cpp
 WORKDIR "/"
@@ -202,7 +201,7 @@ See [this folder](https://github.com/aminya/setup-cpp/tree/master/building/docke
 If you want to build the ones included, then run:
 
 ```ps1
-docker build -f ./building/docker/debian.dockerfile -t setup_cpp .
+docker build -f ./building/docker/ubuntu.dockerfile -t setup_cpp .
 ```
 
 Where you should use the path to the dockerfile after `-f`.
@@ -242,7 +241,7 @@ The following gives an example for setting up a C++ environment inside GitLab pi
 .gitlab-ci.yaml
 
 ```yaml
-image: ubuntu:latest
+image: ubuntu:devel
 
 stages:
   - test

building/docker/debian_node_slim.dockerfile

@@ -1,5 +1,4 @@
-# debian
-FROM debian:bullseye
+FROM ubuntu:devel
 
 # add setup_cpp
 WORKDIR "/"

building/docker/debian.dockerfile renamed to building/docker/ubuntu.dockerfile

@@ -1,5 +1,7 @@
-# debian with node installed
-FROM node:16
+FROM ubuntu:devel
+
+RUN apt-get update -qq
+RUN apt-get install -y --no-install-recommends nodejs
 
 # add setup_cpp.js
 ADD "./dist/" "/"

building/docker/debian_node.dockerfile renamed to building/docker/ubuntu_node.dockerfile

@@ -13,7 +13,7 @@
   },
   "scripts": {
     "build": "cross-env NODE_ENV=production parcel build --detailed-report && npm run copy.matchers",
-    "build.docker": "pnpm build && docker build -f ./building/docker/debian_node.dockerfile -t setup_cpp .",
+    "build.docker": "pnpm build && docker build -f ./building/docker/ubuntu_node.dockerfile -t setup_cpp .",
     "bump": "ncu -u -x execa",
     "clean": "shx rm -rf .parcel-cache dist exe",
     "copy.matchers": "shx cp ./src/gcc/gcc_matcher.json ./dist/ && shx cp ./src/msvc/msvc_matcher.json ./dist && shx cp ./src/python/python_matcher.json ./dist/ && shx cp ./src/llvm/llvm_matcher.json ./dist/ ",