add fastpath2, API only service

this can be brought up independently with its dependencies clickhouse by
docker compose up fastpath2

Author: aagbsn

tests/integration/docker-compose.yml

@@ -53,13 +53,31 @@ services:
     command: [ "./run_fastpath", "--debug", "--clickhouse-url",
                "clickhouse://testuser:testuser@clickhouse:9000/ooni",
                "--keep-s3-cache", "--write-to-disk", "--stdout", "--ccs", "IT,IR",
-               "--start-day", "2026-01-01", "--end-day", "2026-01-03" ]
+               "--start-day", "2026-01-01", "--end-day", "2026-01-03", "--noapi" ]
     depends_on:
       clickhouse:
         condition: service_healthy
       postgres:
         condition: service_started
 
+  fastpath2:
+    image: docker.io/ooni/fastpath:latest
+    volumes:
+      - ./fastpath2/data:/data:Z
+      - ./fastpath2/etc:/etc/ooni:Z
+      - ./fastpath2/lib:/var/lib/fastpath:Z
+
+    command: [ "./run_fastpath", "--debug", "--clickhouse-url",
+               "clickhouse://testuser:testuser@clickhouse:9000/ooni",
+               "--keep-s3-cache", "--write-to-disk", "--stdout" ]
+    depends_on:
+      clickhouse:
+        condition: service_healthy
+      postgres:
+        condition: service_started
+    ports:
+      - "8472:8472"
+
   valkey:
     image: docker.io/valkey/valkey:latest
     ports:

tests/integration/fastpath2/etc/fastpath.conf

@@ -0,0 +1,11 @@
+[DEFAULT]
+# Collector hostnames, comma separated
+collectors = localhost
+clickhouse_url = clickhouse://testuser:testuser@clickhouse:9000/ooni
+# S3 access credentials
+# Currently unused
+s3_access_key =
+s3_secret_key =
+debug = true
+msmt_spool_dir = /data/
+worker_timeout = 30

tests/integration/fastpath2/lib/cache/.gitignore

@@ -0,0 +1,2 @@
+/*
+!.gitignore