Program requires those environment variables to be declared:

• WORK_DIR - path to alibuild work dir (i.e. ~/alice/sw)
• ALIBUILD_ARCH_PREFIX - nam of the folder inside WORK_DIR where builds are stored (i.e. ubuntu2004_x86-64)
• DI_DATASETS - path to folder, where available datasets for runs are stored (must be created - can be empty)
• RUNS_PATH - points to directory in which runs will be started (and their output stored) (must be created)
• MONGO_URL - mongo connection string (mongo can be started by exposing port 27017 in docker-compose.yaml and running sudo docker-compose up mongo)

Proxy expects two arguments to be provided:

1. path to bash script used to execute workflows
2. path to folder containing files which available O2/O2Physics builds:
   1. Filename: <name>.build
   2. Contest:
      1. Build name
      2. GitHub url (required - but not used at the moment)
      3. Branch name (required - but not used at the moment)
      4. Relative path from ALIBUILD_WORK_DIR for specific architecture (i.e. ~/alice/sw/$ALIBUILD_ARCH_PREFIX) to chosen build (same as in alienv, i.e. O2/data-inspector-cleaned-local1)

• cmake
• arrow
• libmongoc
• root
• boost
• rapidjson
• httplib

All dependencies can be installed by in simillar manner by following the example installation on Ubuntu 20.04 in Dockerfile.

1. Build proxy:
   1. mkdir build && cd build
   2. cmake ..
   3. cmake --build .
2. Start MongoDB
3. Declare all environment variables
4. Run: ./proxy <execute-script-path> <builds-definitions-path>

Currently prepared Dockerfiles are working only on Ubuntu 20.04

Force build for 'ubuntu2004_x86-64` with docker: aliBuild build O2 --defaults o2 -a ubuntu2004_x86-64 --docker

1. Build docker image containing all dependencies: docker build -t di-proxy-builder builder/ (can take few hours)

1. Build docker image with proxy: docker build -t di-proxy .
2. Update paths in docker-compose.yaml
3. Environment variable ALIBUILD_WORK_DIR must be specified (created during aliBuild installation)
4. Start proxy and MongoDB: docker-compose up