diff --git a/.github/create_combined_ci_report.py b/.github/create_combined_ci_report.py
index 4d90171b03d4..07352ab0f660 100755
--- a/.github/create_combined_ci_report.py
+++ b/.github/create_combined_ci_report.py
@@ -275,7 +275,7 @@ def main():
         exit(0)
 
     # Upload the report to S3
-    s3_client = boto3.client("s3")
+    s3_client = boto3.client("s3", endpoint_url=os.getenv("S3_URL"))
 
     try:
         s3_client.put_object(
diff --git a/.github/workflows/docker_test_images.yml b/.github/workflows/docker_test_images.yml
index 1a87e9683d08..734a71a84013 100644
--- a/.github/workflows/docker_test_images.yml
+++ b/.github/workflows/docker_test_images.yml
@@ -23,13 +23,13 @@ name: Build docker images
         required: true
 
 env:
-  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-  AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
-  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+  AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
+  AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
+  S3_URL: ${{ secrets.R2_ENDPOINT }}
+  S3_DOWNLOAD: https://build-artifacts.altinity.io
   DOCKER_USERNAME: ${{ secrets.DOCKER_USERNAME }}
   DOCKER_PASSWORD: ${{ secrets.DOCKER_PASSWORD }}
 
-
 jobs:
   DockerBuildAarch64:
     runs-on: [self-hosted, altinity-on-demand, altinity-func-tester-aarch64]
diff --git a/.github/workflows/release_branches.yml b/.github/workflows/release_branches.yml
index d2d099bb7cf4..ebde87037865 100644
--- a/.github/workflows/release_branches.yml
+++ b/.github/workflows/release_branches.yml
@@ -4,9 +4,13 @@ name: ReleaseBranchCI
 env:
   # Force the stdout and stderr streams to be unbuffered
   PYTHONUNBUFFERED: 1
-  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-  AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
-  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+  AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
+  # AWS region not needed for R2
+  # AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
+  AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
+  # Point S3_URL to R2 endpoint
+  S3_URL: ${{ secrets.R2_ENDPOINT }}
+  S3_DOWNLOAD: https://build-artifacts.altinity.io
   CLICKHOUSE_TEST_STAT_LOGIN: ${{ secrets.CLICKHOUSE_TEST_STAT_LOGIN }}
   CLICKHOUSE_TEST_STAT_PASSWORD: ${{ secrets.CLICKHOUSE_TEST_STAT_PASSWORD }}
   CLICKHOUSE_TEST_STAT_URL: ${{ secrets.CLICKHOUSE_TEST_STAT_URL }}
diff --git a/.github/workflows/reusable_build.yml b/.github/workflows/reusable_build.yml
index ea223697a8fb..5a66568f2336 100644
--- a/.github/workflows/reusable_build.yml
+++ b/.github/workflows/reusable_build.yml
@@ -4,9 +4,10 @@
 env:
   # Force the stdout and stderr streams to be unbuffered
   PYTHONUNBUFFERED: 1
-  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-  AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
-  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+  AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
+  AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
+  S3_URL: ${{ secrets.R2_ENDPOINT }}
+  S3_DOWNLOAD: https://build-artifacts.altinity.io
   CLICKHOUSE_TEST_STAT_LOGIN: ${{ secrets.CLICKHOUSE_TEST_STAT_LOGIN }}
   CLICKHOUSE_TEST_STAT_PASSWORD: ${{ secrets.CLICKHOUSE_TEST_STAT_PASSWORD }}
   CLICKHOUSE_TEST_STAT_URL: ${{ secrets.CLICKHOUSE_TEST_STAT_URL }}
diff --git a/.github/workflows/reusable_sign.yml b/.github/workflows/reusable_sign.yml
index 7bfed2758359..20db4eeb48b6 100644
--- a/.github/workflows/reusable_sign.yml
+++ b/.github/workflows/reusable_sign.yml
@@ -57,9 +57,10 @@ env:
   # Force the stdout and stderr streams to be unbuffered
   PYTHONUNBUFFERED: 1
   CHECK_NAME: ${{inputs.test_name}}
-  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-  AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
-  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+  AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
+  AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
+  S3_URL: ${{ secrets.R2_ENDPOINT }}
+  S3_DOWNLOAD: https://build-artifacts.altinity.io
   CLICKHOUSE_TEST_STAT_LOGIN: ${{ secrets.CLICKHOUSE_TEST_STAT_LOGIN }}
   CLICKHOUSE_TEST_STAT_PASSWORD: ${{ secrets.CLICKHOUSE_TEST_STAT_PASSWORD }}
   CLICKHOUSE_TEST_STAT_URL: ${{ secrets.CLICKHOUSE_TEST_STAT_URL }}
diff --git a/.github/workflows/reusable_test.yml b/.github/workflows/reusable_test.yml
index ad0c9f21134c..09629bf5f881 100644
--- a/.github/workflows/reusable_test.yml
+++ b/.github/workflows/reusable_test.yml
@@ -69,9 +69,11 @@ env:
   # Force the stdout and stderr streams to be unbuffered
   PYTHONUNBUFFERED: 1
   CHECK_NAME: ${{inputs.test_name}}
-  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-  AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
-  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+  AWS_ACCESS_KEY_ID: ${{ secrets.R2_ACCESS_KEY_ID }}
+  AWS_SECRET_ACCESS_KEY: ${{ secrets.R2_SECRET_ACCESS_KEY }}
+  # Point S3_URL to R2 endpoint
+  S3_URL: ${{ secrets.R2_ENDPOINT }}
+  S3_DOWNLOAD: https://build-artifacts.altinity.io
   CLICKHOUSE_TEST_STAT_LOGIN: ${{ secrets.CLICKHOUSE_TEST_STAT_LOGIN }}
   CLICKHOUSE_TEST_STAT_PASSWORD: ${{ secrets.CLICKHOUSE_TEST_STAT_PASSWORD }}
   CLICKHOUSE_TEST_STAT_URL: ${{ secrets.CLICKHOUSE_TEST_STAT_URL }}
@@ -135,6 +137,7 @@ jobs:
         with:
           job_type: test
       - name: Docker setup
+        if: ${{ !contains(inputs.name, 'Docker') }}
         uses: ./.github/actions/docker_setup
         with:
           test_name: ${{ inputs.test_name }}
diff --git a/docker/packager/packager b/docker/packager/packager
index 88d6f21c3cc1..55c5d8263f6f 100755
--- a/docker/packager/packager
+++ b/docker/packager/packager
@@ -13,6 +13,7 @@ IMAGE_TYPE = "binary-builder"
 IMAGE_NAME = f"altinityinfra/{IMAGE_TYPE}"
 DEFAULT_TMP_PATH = SCRIPT_PATH.parent.absolute() / 'tmp'
 TEMP_PATH = Path(os.getenv("TEMP_PATH", DEFAULT_TMP_PATH))
+SCCACHE_ENDPOINT = os.getenv("S3_URL")
 
 class BuildException(Exception):
     pass
@@ -84,7 +85,7 @@ def run_docker_image_with_env(
             for key, value in aws_secrets.items():
                 f.write(f"\n{key}={value}")
 
-        extra_parts = f"--volume={host_aws_config_file_path}:{env_part['AWS_CONFIG_FILE']}"
+        extra_parts = f"--volume={host_aws_config_file_path}:{env_part['AWS_CONFIG_FILE']} -e SCCACHE_ENDPOINT={SCCACHE_ENDPOINT} -e SCCACHE_REGION=auto"
 
     env_part = " -e ".join(env_variables)
     if env_part:
diff --git a/tests/ci/ci_metadata.py b/tests/ci/ci_metadata.py
index ce0358f5e76e..e3b04e93c618 100644
--- a/tests/ci/ci_metadata.py
+++ b/tests/ci/ci_metadata.py
@@ -45,7 +45,7 @@ def __init__(
         self.sync_pr_run_id = 0
 
         if self.pr_number:
-            self.s3_path = f"{self._S3_PREFIX}/PRs/{self.pr_number}/"
+            self.s3_path = f"{self._S3_PREFIX}/{self.pr_number}/"
         else:
             self.s3_path = f"{self._S3_PREFIX}/{self.git_ref}/{self.sha}/"
 
@@ -58,7 +58,7 @@ def __init__(
             and GITHUB_REPOSITORY != GITHUB_UPSTREAM_REPOSITORY
         ):
             self.upstream_pr_number = int(self.git_ref.split("/pr/", maxsplit=1)[1])
-            self.s3_path_upstream = f"{self._S3_PREFIX}/PRs/{self.upstream_pr_number}/"
+            self.s3_path_upstream = f"{self._S3_PREFIX}/{self.upstream_pr_number}/"
 
         self._updated = False
 
diff --git a/tests/ci/env_helper.py b/tests/ci/env_helper.py
index 715292d22cd4..79045c813957 100644
--- a/tests/ci/env_helper.py
+++ b/tests/ci/env_helper.py
@@ -35,6 +35,9 @@
 S3_SECRET_ACCESS_KEY = os.getenv("AWS_SECRET_ACCESS_KEY")
 S3_TEST_REPORTS_BUCKET = os.getenv("S3_TEST_REPORTS_BUCKET", "altinity-build-artifacts")
 
+SCCACHE_ACCESS_KEY_ID = os.getenv("SCCACHE_ACCESS_KEY_ID")
+SCCACHE_SECRET_ACCESS_KEY = os.getenv("SCCACHE_SECRET_ACCESS_KEY")
+
 S3_URL = os.getenv("S3_URL", "https://s3.amazonaws.com")
 S3_DOWNLOAD = os.getenv("S3_DOWNLOAD", S3_URL)
 S3_ARTIFACT_DOWNLOAD_TEMPLATE = (
diff --git a/tests/ci/s3_helper.py b/tests/ci/s3_helper.py
index d0aa034258a5..ccfc849ef479 100644
--- a/tests/ci/s3_helper.py
+++ b/tests/ci/s3_helper.py
@@ -360,7 +360,10 @@ def get_url(bucket: str, key: str) -> str:
 
     @staticmethod
     def s3_url(bucket: str, key: str) -> str:
-        url = f"{S3_DOWNLOAD}/{bucket}/{key}"
+        if 'r2.cloudflarestorage.com' in S3_URL:
+            url = f"{S3_DOWNLOAD}/{key}"
+        else:
+            url = f"{S3_DOWNLOAD}/{bucket}/{key}"
         # last two replacements are specifics of AWS urls:
         # https://jamesd3142.wordpress.com/2018/02/28/amazon-s3-and-the-plus-symbol/
         url = url.replace("+", "%2B").replace(" ", "%20")
diff --git a/tests/performance/scripts/download.sh b/tests/performance/scripts/download.sh
index 7803aee8e0b2..678d23fe026b 100755
--- a/tests/performance/scripts/download.sh
+++ b/tests/performance/scripts/download.sh
@@ -36,7 +36,8 @@ function download
     fi
     declare -a urls_to_try=(
         "$S3_URL/REFs/master/$REF_SHA/$build_name_new/performance.tar.zst"
-        "$S3_URL/PRs/0/$REF_SHA/$BUILD_NAME/performance.tar.zst"
+        "$S3_URL/PRs/$left_pr/$left_sha/$BUILD_NAME/performance.tar.zst"
+        "$S3_URL/$left_pr/$left_sha/$BUILD_NAME/performance.tar.zst"
     )
 
     for path in "${urls_to_try[@]}"