add justfile with recommended/suggest build aliases

.justfile

@@ -0,0 +1,22 @@
+
+mvncmd := env_var_or_default("QMVNCMD", "./mvnw -T0.8C")
+
+# build main project quickly
+build:
+   {{mvncmd}} -Dquickly
+
+# build main project fast - skip docs, tests, ITs, invoker, extension validation, gradle tests, truststore
+build-fast:
+    {{mvncmd}} -e -DskipDocs -DskipTests -DskipITs -Dinvoker.skip -DskipExtensionValidation -Dskip.gradle.tests -Dtruststore.skip clean install
+
+# build just docs, skipping as much unnecessary as posible. 
+build-docs:
+    {{mvncmd}} -e -DskipTests -DskipITs -Dinvoker.skip -DskipExtensionValidation -Dskip.gradle.tests -Dtruststore.skip -Dno-test-modules -Dasciidoctor.fail-if=DEBUG clean install
+
+# format code according to Quarkus coding conventions
+format:
+    {{mvncmd}} process-sources -Denforcer.skip -Dprotoc.skip
+
+# run Quarkus CLI from local built snapshot
+qss:
+    java -jar ./devtools/cli/target/quarkus-cli-999-SNAPSHOT-runner.jar

CONTRIBUTING.md

@@ -462,6 +462,12 @@ alias qss="java -jar ${HOME}/git/quarkus/devtools/cli/target/quarkus-cli-999-SNA
 Using `./mvnw` is often not practical in this case as you might want to call these aliases from a nested directory.
 [gum](https://andresalmiray.com/gum-the-gradle-maven-wrapper/) might be useful in this case.
 
+##### Justfile
+
+As a convenience, we have a [justfile](.justfile)) that provides the suggested set of aliases to use to build Quarkus using [just](https://just.systems/).
+
+Run `just -l` to see the list of aliases.
+
 #### Building all modules of an extension
 
 Let's say you want to make changes to the `Jackson` extension. This extension contains the `deployment`, `runtime`