[ci] Pin CI builder image revision

Author: kateinoigakukun

.github/scripts/build-matrix.rb

@@ -6,7 +6,8 @@
     "build_os": "ubuntu-18.04",
     "agent_query": "ubuntu-18.04",
     "target": "ubuntu18.04_x86_64",
-    "container": "ghcr.io/swiftwasm/swift-ci:main-ubuntu-18.04",
+#   "container": "ghcr.io/swiftwasm/swift-ci:main-ubuntu-18.04",
+    "container": "ghcr.io/swiftwasm/swift-ci@sha256:e38db2e47e9b4a9207276fd3061748a719901884a6fa44562abb47d196534864",
     "run_stdlib_test": true,
     "run_full_test": false,
     "run_e2e_test": true,
@@ -18,7 +19,8 @@
     "build_os": "ubuntu-20.04",
     "agent_query": "ubuntu-20.04",
     "target": "ubuntu20.04_x86_64",
-    "container": "ghcr.io/swiftwasm/swift-ci:main-ubuntu-20.04",
+#   "container": "ghcr.io/swiftwasm/swift-ci:main-ubuntu-20.04",
+    "container": "ghcr.io/swiftwasm/swift-ci@sha256:5e135cc954d23467cbd3bc54583d1bd870d7e268b339ef8638f9a38b74cb8503",
     "run_stdlib_test": true,
     "run_full_test": false,
     "run_e2e_test": true,
@@ -30,7 +32,8 @@
     "build_os": "ubuntu-22.04",
     "agent_query": "ubuntu-22.04",
     "target": "ubuntu22.04_x86_64",
-    "container": "ghcr.io/swiftwasm/swift-ci:main-ubuntu-22.04",
+#   "container": "ghcr.io/swiftwasm/swift-ci:main-ubuntu-22.04",
+    "container": "ghcr.io/swiftwasm/swift-ci@sha256:8b667f18c8cfc34b9823bfe797fb4a279611f9a61732d5e7f6e5304c8c43326e",
     "run_stdlib_test": true,
     "run_full_test": false,
     "run_e2e_test": true,
@@ -42,7 +45,8 @@
     "build_os": "amazon-linux-2",
     "agent_query": "ubuntu-22.04",
     "target": "amazonlinux2_x86_64",
-    "container": "ghcr.io/swiftwasm/swift-ci:main-amazon-linux-2",
+#   "container": "ghcr.io/swiftwasm/swift-ci:main-amazon-linux-2",
+    "container": "ghcr.io/swiftwasm/swift-ci@sha256:4bf1e80ea3757a6cb0c3ebf7ed9423971c5ecb9ce8162a46487a1cb0398b4e69",
     "run_stdlib_test": false,
     "run_full_test": false,
     "run_e2e_test": false,
@@ -89,7 +93,8 @@ def main
         "build_os": "ubuntu-20.04",
         "agent_query": label,
         "target": "ubuntu20.04_aarch64",
-        "container": "ghcr.io/swiftwasm/swift-ci:main-ubuntu-20.04",
+#       "container": "ghcr.io/swiftwasm/swift-ci:main-ubuntu-20.04",
+        "container": "ghcr.io/swiftwasm/swift-ci@sha256:5e135cc954d23467cbd3bc54583d1bd870d7e268b339ef8638f9a38b74cb8503",
         "run_stdlib_test": false,
         "run_full_test": false,
         "run_e2e_test": false,