DATAJDBC-642 - Use Docker hub credentials for all docker operations.

Be sure to use maven caching for cleaning. Also relocate all the CI scripts into a ci folder.

ci/test.sh

@@ -0,0 +1,10 @@
+#!/bin/bash -x
+
+set -euo pipefail
+
+ci/accept-third-party-license.sh
+mkdir -p /tmp/jenkins-home
+chown -R 1001:1001 .
+MAVEN_OPTS="-Duser.name=jenkins -Duser.home=/tmp/jenkins-home" \
+  ./mvnw \
+  -P${PROFILE} clean dependency:list test -Dsort -U -B -Dmaven.repo.local=/tmp/jenkins-home/.m2/spring-data-jdbc