CI: Add test Mimir backend image for integration tests (#76051)

* test mimir image drone

* add mimir service to services.star

* change name for mimir step

* change remote alertmanager step names, add commands for integration tests

* add  tag to mimir image

scripts/drone/events/release.star

@@ -18,6 +18,7 @@ load(
     "publish_grafanacom_step",
     "publish_linux_packages_step",
     "redis_integration_tests_steps",
+    "remote_alertmanager_integration_tests_steps",
     "verify_gen_cue_step",
     "verify_gen_jsonnet_step",
     "wire_install_step",
@@ -221,7 +222,8 @@ def integration_test_pipelines():
                              mysql_integration_tests_steps("mysql57", "5.7") + \
                              mysql_integration_tests_steps("mysql80", "8.0") + \
                              redis_integration_tests_steps() + \
-                             memcached_integration_tests_steps()
+                             memcached_integration_tests_steps() + \
+                             remote_alertmanager_integration_tests_steps()
 
     pipelines.append(pipeline(
         name = "integration-tests",

scripts/drone/pipelines/integration_tests.star

@@ -17,6 +17,7 @@ load(
     "mysql_integration_tests_steps",
     "postgres_integration_tests_steps",
     "redis_integration_tests_steps",
+    "remote_alertmanager_integration_tests_steps",
     "verify_gen_cue_step",
     "verify_gen_jsonnet_step",
     "wire_install_step",
@@ -65,7 +66,8 @@ def integration_tests(trigger, prefix, ver_mode = "pr"):
                  mysql_integration_tests_steps("mysql57", "5.7") + \
                  mysql_integration_tests_steps("mysql80", "8.0") + \
                  redis_integration_tests_steps() + \
-                 memcached_integration_tests_steps()
+                 memcached_integration_tests_steps() + \
+                 remote_alertmanager_integration_tests_steps()
 
     return pipeline(
         name = "{}-integration-tests".format(prefix),

scripts/drone/services/services.star

@@ -53,6 +53,12 @@ def integration_test_services():
             "volumes": [{"name": "mysql80", "path": "/var/lib/mysql"}],
             "commands": ["docker-entrypoint.sh mysqld --default-authentication-plugin=mysql_native_password"],
         },
+        {
+            "name": "mimir",
+            "image": images["mimir"],
+            "environment": {},
+            "commands": ["/bin/mimir -target=backend"],
+        },
         {
             "name": "redis",
             "image": images["redis_alpine"],

scripts/drone/steps/lib.star

@@ -961,6 +961,14 @@ def redis_integration_tests_steps():
 
     return integration_tests_steps("redis", cmds, "redis", "6379", environment = environment)
 
+def remote_alertmanager_integration_tests_steps():
+    cmds = [
+        "go clean -testcache",
+        "go test -run IntegrationRemoteAlertmanager -covermode=atomic -timeout=2m ./pkg/...",
+    ]
+
+    return integration_tests_steps("remote-alertmanager", cmds, "mimir", "8080", None)
+
 def memcached_integration_tests_steps():
     cmds = [
         "go clean -testcache",

scripts/drone/utils/images.star

@@ -20,6 +20,7 @@ images = {
     "plugins_slack": "plugins/slack",
     "python": "python:3.8",
     "postgres_alpine": "postgres:12.3-alpine",
+    "mimir": "grafana/mimir:latest",
     "mysql5": "mysql:5.7.39",
     "mysql8": "mysql:8.0.32",
     "redis_alpine": "redis:6.2.11-alpine",