diff --git a/.github/workflows/flaky.yml b/.github/workflows/flaky.yml
index 9da5a6854..d1249b7b7 100644
--- a/.github/workflows/flaky.yml
+++ b/.github/workflows/flaky.yml
@@ -8,8 +8,8 @@ jobs:
   flaky:
     runs-on: ubuntu-latest
     container:
+      # Use ubuntu-18.04 to compile with glibc 2.27, which are the production expectations
       image: ubuntu:18.04
-
     steps:
     - uses: actions/checkout@v3
     - name: Install needed dependencies
diff --git a/.github/workflows/publish-binaries.yml b/.github/workflows/publish-binaries.yml
index ebc508804..67359c4ab 100644
--- a/.github/workflows/publish-binaries.yml
+++ b/.github/workflows/publish-binaries.yml
@@ -37,6 +37,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: check-version
     container:
+      # Use ubuntu-18.04 to compile with glibc 2.27
       image: ubuntu:18.04
     steps:
     - uses: actions/checkout@v3
diff --git a/.github/workflows/publish-deb-brew-pkg.yml b/.github/workflows/publish-deb-brew-pkg.yml
index da30e65f4..a276b5a6e 100644
--- a/.github/workflows/publish-deb-brew-pkg.yml
+++ b/.github/workflows/publish-deb-brew-pkg.yml
@@ -18,6 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     needs: check-version
     container:
+      # Use ubuntu-18.04 to compile with glibc 2.27
       image: ubuntu:18.04
     steps:
     - name: Install needed dependencies
diff --git a/.github/workflows/rust.yml b/.github/workflows/rust.yml
index 1ec5ae9ea..98d1db961 100644
--- a/.github/workflows/rust.yml
+++ b/.github/workflows/rust.yml
@@ -19,6 +19,7 @@ jobs:
     name: Tests on ubuntu-18.04
     runs-on: ubuntu-latest
     container:
+      # Use ubuntu-18.04 to compile with glibc 2.27, which are the production expectations
       image: ubuntu:18.04
     steps:
     - uses: actions/checkout@v3
@@ -70,6 +71,7 @@ jobs:
     name: Run tests in debug
     runs-on: ubuntu-latest
     container:
+      # Use ubuntu-18.04 to compile with glibc 2.27, which are the production expectations
       image: ubuntu:18.04
     steps:
       - uses: actions/checkout@v3