ci: stop building alpine-debug images in favor of ubuntu-based debug …

…image (#13598)

Additional Description:
Stop building the deprecated image for CI speed up and space saving.
Risk Level: Low
Testing:
Docs Changes: Done
Release Notes: Added

Signed-off-by: Lizan Zhou <lizan@tetrate.io>

.azure-pipelines/pipelines.yml

@@ -250,6 +250,10 @@ stages:
         steps:
           - bash: .azure-pipelines/cleanup.sh
             displayName: "Removing tools from agent"
+          - bash: |
+              echo "disk space at beginning of build:"
+              df -h
+            displayName: "Check disk space at beginning"
           - task: DownloadBuildArtifacts@0
             inputs:
               buildType: current
@@ -275,6 +279,11 @@ stages:
               AZP_SHA1: $(Build.SourceVersion)
               DOCKERHUB_USERNAME: $(DockerUsername)
               DOCKERHUB_PASSWORD: $(DockerPassword)
+          - bash: |
+              echo "disk space at end of build:"
+              df -h
+            displayName: "Check disk space at end"
+            condition: always()
           - task: PublishBuildArtifacts@1
             inputs:
               pathtoPublish: "$(Build.StagingDirectory)/build_images"

ci/README.md

@@ -15,9 +15,9 @@ binary built from the latest tip of master that passed tests.
 
 ## Alpine Envoy image
 
-Minimal images based on Alpine Linux allow for quicker deployment of Envoy. Two Alpine based images are built,
-one with an Envoy binary with debug (`envoyproxy/envoy-alpine-debug`) symbols and one stripped of them (`envoyproxy/envoy-alpine`).
-Both images are pushed with two different tags: `<hash>` and `latest`. Parallel to the Ubuntu images above, `<hash>` corresponds to the
+Minimal images based on Alpine Linux allow for quicker deployment of Envoy. The Alpine base image is only built with symbols stripped.
+To get the binary with symbols, use the corresponding Ubuntu based debug image. The image is pushed with two different tags:
+`<hash>` and `latest`. Parallel to the Ubuntu images above, `<hash>` corresponds to the
 master commit at which the binary was compiled, and `latest` corresponds to a binary built from the latest tip of master that passed tests.
 
 ## Windows 2019 Envoy image

ci/docker_ci.sh

@@ -125,7 +125,7 @@ if is_windows; then
   BUILD_COMMAND=("build")
 else
   # "-google-vrp" must come afer "" to ensure we rebuild the local base image dependency.
-  BUILD_TYPES=("" "-debug" "-alpine" "-alpine-debug" "-google-vrp")
+  BUILD_TYPES=("" "-debug" "-alpine" "-google-vrp")
 
   # Configure docker-buildx tools
   BUILD_COMMAND=("buildx" "build")

docs/root/start/building.rst

@@ -42,9 +42,6 @@ be found in the following repositories:
   binary with debug symbols on top of an Ubuntu Bionic base.
 * `envoyproxy/envoy-alpine <https://hub.docker.com/r/envoyproxy/envoy-alpine/tags/>`_: Release
   binary with symbols stripped on top of a **glibc** alpine base.
-* `envoyproxy/envoy-alpine-debug <https://hub.docker.com/r/envoyproxy/envoy-alpine-debug/tags/>`_:
-  *Deprecated in favor of envoyproxy/envoy-debug.* Release binary with debug symbols on top of a
-  Release binary with debug symbols on top of a **glibc** alpine base.
 
 .. note::
 
@@ -59,9 +56,6 @@ be found in the following repositories:
   binary with debug symbols on top of an Ubuntu Bionic base.
 * `envoyproxy/envoy-alpine-dev <https://hub.docker.com/r/envoyproxy/envoy-alpine-dev/tags/>`_: Release
   binary with symbols stripped on top of a **glibc** alpine base.
-* `envoyproxy/envoy-alpine-debug-dev <https://hub.docker.com/r/envoyproxy/envoy-alpine-debug-dev/tags/>`_:
-  *Deprecated in favor of envoyproxy/envoy-debug-dev.* Release binary with debug symbols on top of a
-  **glibc** alpine base.
 
 In the above *dev* repositories, the *latest* tag points to the last Envoy SHA in master that passed
 tests.

docs/root/version_history/current.rst

@@ -9,6 +9,7 @@ Minor Behavior Changes
 ----------------------
 *Changes that may cause incompatibilities for some users, but should not for most*
 
+* build: the Alpine based debug images are no longer built in CI, use Ubuntu based images instead.
 * ext_authz filter: the deprecated field :ref:`use_alpha <envoy_api_field_config.filter.http.ext_authz.v2.ExtAuthz.use_alpha>` is no longer supported and cannot be set anymore.
 
 Bug Fixes