Set export REWRITE_OFFLINE=true to disable fetching external projects

Obviously, you need to have a previous build complete so that you have
all pieces around.
Also you might miss the latest adjustments to OpenRewrite so make sure
you do a full build from time to time.

jakarta/README.md

@@ -7,6 +7,14 @@ This directory contains scripts and configuration files to automate the migratio
 `jakarta/transform.sh` is the main script to run.
 It has to be run from the root of the Quarkus repository.
 
+If you are offline and can't fetch the external projects, do:
+```
+export REWRITE_OFFLINE=true
+jakarta/transform.sh
+```
+Obviously, you need to have run a full build before.
+Also keep in mind you should run a full build from time to time to get the potential updates to OpenRewrite.
+
 It consists of several steps that leverage various tools:
 
 - [OpenRewrite](https://github.com/openrewrite/rewrite) - rewrites the POM files

jakarta/transform.sh

@@ -13,36 +13,38 @@ if [ ! -f dco.txt ]; then
     exit 1
 fi
 
-# Prepare OpenRewrite - we temporarily build a local version as we need a patch
-rm -rf target/rewrite
-git clone [email protected]:gsmet/rewrite.git target/rewrite
-pushd target/rewrite
-git checkout jakarta
-./gradlew -x test -x javadoc publishToMavenLocal
-popd
-
-rm -rf target/rewrite-maven-plugin
-git clone [email protected]:gsmet/rewrite-maven-plugin.git target/rewrite-maven-plugin
-pushd target/rewrite-maven-plugin
-git checkout jakarta
-./mvnw clean install -DskipTests -DskipITs
-popd
-
-# Build SmallRye Config (temporary)
-rm -rf target/smallrye-config
-git clone [email protected]:smallrye/smallrye-config.git target/smallrye-config
-pushd target/smallrye-config
-git checkout jakarta
-mvn clean install -DskipTests -DskipITs
-popd
-
-# Build Kotlin Maven Plugin to allow skipping main compilation
-# (skipping test compilation is supported but not main)
-rm -rf target/kotlin
-git clone -b v1.6.10-jakarta --depth 1 [email protected]:gsmet/kotlin.git target/kotlin
-pushd target/kotlin/libraries/tools/kotlin-maven-plugin
-mvn clean install -DskipTests -DskipITs
-popd
+if [ "${REWRITE_OFFLINE-false}" != "true" ]; then
+  # Prepare OpenRewrite - we temporarily build a local version as we need a patch
+  rm -rf target/rewrite
+  git clone [email protected]:gsmet/rewrite.git target/rewrite
+  pushd target/rewrite
+  git checkout jakarta
+  ./gradlew -x test -x javadoc publishToMavenLocal
+  popd
+
+  rm -rf target/rewrite-maven-plugin
+  git clone [email protected]:gsmet/rewrite-maven-plugin.git target/rewrite-maven-plugin
+  pushd target/rewrite-maven-plugin
+  git checkout jakarta
+  ./mvnw clean install -DskipTests -DskipITs
+  popd
+
+  # Build SmallRye Config (temporary)
+  rm -rf target/smallrye-config
+  git clone [email protected]:smallrye/smallrye-config.git target/smallrye-config
+  pushd target/smallrye-config
+  git checkout jakarta
+  mvn clean install -DskipTests -DskipITs
+  popd
+
+  # Build Kotlin Maven Plugin to allow skipping main compilation
+  # (skipping test compilation is supported but not main)
+  rm -rf target/kotlin
+  git clone -b v1.6.10-jakarta --depth 1 [email protected]:gsmet/kotlin.git target/kotlin
+  pushd target/kotlin/libraries/tools/kotlin-maven-plugin
+  mvn clean install -DskipTests -DskipITs
+  popd
+fi
 
 # Set up jbang alias, we are using latest released transformer version
 jbang alias add --name transform org.eclipse.transformer:org.eclipse.transformer.cli:0.2.0