Add simple Dockerfile for the simplified package builder

docker/builder/.dockerignore

@@ -0,0 +1,68 @@
+artifacts/
+.git/
+
+# intellij files
+.idea/
+*.iml
+*.ipr
+*.iws
+build-idea/
+out/
+
+# include shared intellij config
+!.idea/inspectionProfiles/Project_Default.xml
+!.idea/runConfigurations/Debug_OpenSearch.xml
+!.idea/vcs.xml
+
+# These files are generated in the main tree by annotation processors
+benchmarks/src/main/generated/*
+benchmarks/bin/*
+benchmarks/build-eclipse-default/*
+server/bin/*
+server/build-eclipse-default/*
+test/framework/build-eclipse-default/*
+
+# eclipse files
+.project
+.classpath
+.settings
+build-eclipse/
+
+# netbeans files
+nb-configuration.xml
+nbactions.xml
+
+# gradle stuff
+.gradle/
+build/
+
+# vscode stuff
+.vscode/
+
+# testing stuff
+**/.local*
+.vagrant/
+/logs/
+
+# osx stuff
+.DS_Store
+
+# default folders in which the create_bwc_index.py expects to find old es versions in
+/backwards
+/dev-tools/backwards
+
+# needed in case docs build is run...maybe we can configure doc build to generate files under build?
+html_docs
+
+# random old stuff that we should look at the necessity of...
+/tmp/
+eclipse-build
+
+# projects using testfixtures
+testfixtures_shared/
+
+# These are generated from .ci/jobs.t
+.ci/jobs/
+
+# build files generated
+doc-tools/missing-doclet/bin/

docker/builder/Dockerfile

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+FROM ubuntu:noble
+
+# Install required packages
+RUN apt-get update -y && \
+    apt-get upgrade -y && \
+    apt-get install curl gnupg2 -y && \
+    apt-get clean -y
+