Remove oss-fuzz/worker and oss-fuzz/host images. (#5094)

They are supporting a model that no longer exists.

Author: jonathanmetzman

docker/README.md

@@ -75,8 +75,6 @@ graph TD
 
     subgraph OSS-Fuzz
         H(oss-fuzz/base)
-        N(oss-fuzz/worker)
-        O(oss-fuzz/host)
         P(oss-fuzz/host-high-end)
     end
 
@@ -103,8 +101,5 @@ graph TD
     F --> L;
     F --> M;
 
-    H --> N;
-    H --> O;
-
-    O --> P;
+    H --> P;
 ```

docker/build.sh

@@ -22,9 +22,7 @@ IMAGES=(
   gcr.io/clusterfuzz-images/chromium/tester
   gcr.io/clusterfuzz-images/chromium/tests-syncer
   gcr.io/clusterfuzz-images/oss-fuzz/base
-  gcr.io/clusterfuzz-images/oss-fuzz/host
   gcr.io/clusterfuzz-images/oss-fuzz/host-high-end
-  gcr.io/clusterfuzz-images/oss-fuzz/worker
   gcr.io/clusterfuzz-images/ci
   gcr.io/clusterfuzz-images/utask-main-scheduler
   gcr.io/clusterfuzz-images/tworker

docker/oss-fuzz/host-high-end/CHANGELOG.md

@@ -21,6 +21,6 @@ The package lists for all three images are identical to their respective base im
 
 ## Dockerfile Analysis
 
-The `oss-fuzz-host-high-end` Dockerfile is a minimal "wrapper" image. Its only purpose is to inherit from a `clusterfuzz/oss-fuzz/host` image and set a few environment variables. It does not install any packages or perform any configurations itself.
+The `oss-fuzz-host-high-end` Dockerfile is a minimal "wrapper" image. Its only purpose is to inherit from a `clusterfuzz/oss-fuzz/base` image and set a few environment variables. It does not install any packages or perform any configurations itself.
 
 Because of this simplicity, the only change required to upgrade from `latest`/`ubuntu20` to `ubuntu24` is updating the `FROM` instruction to point to the corresponding `ubuntu24-04` tag of the host image. All package differences are inherited directly from this base image change.

docker/oss-fuzz/host-high-end/Dockerfile

@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM gcr.io/clusterfuzz-images/oss-fuzz/host
+FROM gcr.io/clusterfuzz-images/oss-fuzz/base
 
 # Run less instances of ClusterFuzz on these so that each instance has more
 # resoures.

docker/oss-fuzz/host-high-end/ubuntu-20-04.Dockerfile

@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM gcr.io/clusterfuzz-images/oss-fuzz/host:ubuntu-20-04
+FROM gcr.io/clusterfuzz-images/oss-fuzz/base:ubuntu-20-04
 
 # Run less instances of ClusterFuzz on these so that each instance has more
 # resoures.

docker/oss-fuzz/host-high-end/ubuntu-24-04.Dockerfile

@@ -11,7 +11,7 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
-FROM gcr.io/clusterfuzz-images/oss-fuzz/host:ubuntu-24-04
+FROM gcr.io/clusterfuzz-images/oss-fuzz/base:ubuntu-24-04
 
 # Run less instances of ClusterFuzz on these so that each instance has more
 # resoures.