diff --git a/docker/docker-compose.1804.52.yaml b/docker/docker-compose.1804.52.yaml
deleted file mode 100644
index db6938d..0000000
--- a/docker/docker-compose.1804.52.yaml
+++ /dev/null
@@ -1,14 +0,0 @@
-version: "3"
-
-services:
-
-  runtime-setup:
-    image: swift-distributed-tracing:18.04-5.2
-
-  test:
-    image: swift-distributed-tracing:18.04-5.2
-    environment: []
-      #- SANITIZER_ARG=--sanitize=thread
-
-  shell:
-    image: swift-distributed-tracing:18.04-5.2
diff --git a/docker/docker-compose.1804.53.yaml b/docker/docker-compose.1804.53.yaml
deleted file mode 100644
index 16c6879..0000000
--- a/docker/docker-compose.1804.53.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
-version: "3"
-
-services:
-
-  runtime-setup:
-    image: swift-distributed-tracing:18.04-5.3
-    build:
-      args:
-        ubuntu_version: "bionic"
-        swift_version: "5.3"
-
-  test:
-    image: swift-distributed-tracing:18.04-5.3
-    environment: []
-      #- SANITIZER_ARG=--sanitize=thread
-
-  shell:
-    image: swift-distributed-tracing:18.04-5.3
diff --git a/docker/docker-compose.1804.54.yaml b/docker/docker-compose.1804.54.yaml
deleted file mode 100644
index 2c8a402..0000000
--- a/docker/docker-compose.1804.54.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
-version: "3"
-
-services:
-
-  runtime-setup:
-    image: swift-distributed-tracing:18.04-5.4
-    build:
-      args:
-        ubuntu_version: "bionic"
-        swift_version: "5.4"
-
-  test:
-    image: swift-distributed-tracing:18.04-5.4
-    environment: []
-      #- SANITIZER_ARG=--sanitize=thread
-
-  shell:
-    image: swift-distributed-tracing:18.04-5.4
diff --git a/docker/docker-compose.1804.55.yaml b/docker/docker-compose.1804.55.yaml
deleted file mode 100644
index 70d8c47..0000000
--- a/docker/docker-compose.1804.55.yaml
+++ /dev/null
@@ -1,18 +0,0 @@
-version: "3"
-
-services:
-
-  runtime-setup:
-    image: swift-distributed-tracing:18.04-5.5
-    build:
-      args:
-        ubuntu_version: "bionic"
-        swift_version: "5.5"
-
-  test:
-    image: swift-distributed-tracing:18.04-5.5
-    environment: []
-      #- SANITIZER_ARG=--sanitize=thread
-
-  shell:
-    image: swift-distributed-tracing:18.04-5.5