feat(go): add go1.26

go/cloudbuild-test.yaml

@@ -51,6 +51,24 @@ steps:
       ]
     waitFor: ["go125-build"]
 
+
+  # Go 1.26 build
+  - name: gcr.io/cloud-builders/docker
+    args: ["build", "-t", "us-central1-docker.pkg.dev/$PROJECT_ID/go126", "."]
+    dir: go/go126
+    id: go126-build
+    waitFor: ["-"]
+  - name: gcr.io/gcp-runtimes/structure_test
+    args:
+      [
+        "-i",
+        "us-central1-docker.pkg.dev/$PROJECT_ID/go126",
+        "--config",
+        "/workspace/go/go126.yaml",
+        "-v",
+      ]
+    waitFor: ["go126-build"]
+
   # Go 1.25 release build
   - name: gcr.io/cloud-builders/docker
     args: ["build", "-t", "us-central1-docker.pkg.dev/$PROJECT_ID/release-images/go125", "."]

go/cloudbuild.yaml

@@ -51,9 +51,27 @@ steps:
       ]
     waitFor: ["go125-build"]
 
+    # Go 1.26 build
+  - name: gcr.io/cloud-builders/docker
+    args: ["build", "-t", "gcr.io/$PROJECT_ID/go126", "."]
+    dir: go/go126
+    id: go126-build
+    waitFor: ["-"]
+  - name: gcr.io/gcp-runtimes/structure_test
+    args:
+      [
+        "-i",
+        "gcr.io/$PROJECT_ID/go126",
+        "--config",
+        "/workspace/go/go126.yaml",
+        "-v",
+      ]
+    waitFor: ["go126-build"]
+
 images:
   - gcr.io/$PROJECT_ID/go124
   - gcr.io/$PROJECT_ID/go125
+  - gcr.io/$PROJECT_ID/go126
 
 options:
   logging: CLOUD_LOGGING_ONLY

go/go126.yaml

@@ -0,0 +1,22 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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.
+
+schemaVersion: 1.0.0
+commandTests:
+  - name: "version"
+    command: ["go", "version"]
+    expectedOutput: ["go version go1.26"]
+  - name: "gcloud"
+    command: ["gcloud", "version"]
+    expectedOutput: ["Google Cloud SDK"]

go/go126/Dockerfile

@@ -0,0 +1,54 @@
+# Copyright 2026 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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 golang:1.26
+
+# Install dependencies
+RUN set -ex; \
+    apt-get update -y; \
+    apt-get install -y \
+    unzip wget vim \
+    # for docker
+    apt-transport-https ca-certificates curl gnupg
+
+RUN install -m 0755 -d /etc/apt/keyrings && \
+    curl -fsSL https://download.docker.com/linux/debian/gpg | gpg --dearmor -o /etc/apt/keyrings/docker.gpg && \
+    chmod a+r /etc/apt/keyrings/docker.gpg && \
+    echo "deb [arch="$(dpkg --print-architecture)" signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/debian \
+    "$(. /etc/os-release && echo "$VERSION_CODENAME")" stable" | \
+    tee /etc/apt/sources.list.d/docker.list > /dev/null && \
+    apt-get update
+RUN apt-get install -y docker-ce docker-ce-cli containerd.io
+
+RUN rm -rf /var/lib/apt/lists/*
+
+# Install protoc
+RUN wget https://github.com/protocolbuffers/protobuf/releases/download/v3.13.0/protoc-3.13.0-linux-x86_64.zip
+RUN unzip protoc-3.13.0-linux-x86_64.zip
+RUN mv bin/protoc /bin/protoc && which protoc
+
+# Install gcloud SDK
+RUN echo "deb [signed-by=/usr/share/keyrings/cloud.google.gpg] https://packages.cloud.google.com/apt cloud-sdk main" | tee -a /etc/apt/sources.list.d/google-cloud-sdk.list && \
+    curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | gpg --dearmor -o /usr/share/keyrings/cloud.google.gpg && \
+    apt-get update -y && apt-get install google-cloud-cli -y
+
+# Install tools used in build
+RUN (export GOTOOLCHAIN='auto' && \
+    go install honnef.co/go/tools/cmd/staticcheck@latest && \
+    go install github.com/jstemmer/go-junit-report@latest && \
+    go install gotest.tools/gotestsum@latest && \
+    go install golang.org/x/lint/golint@latest && \
+    go install golang.org/x/tools/cmd/goimports@latest)
+
+WORKDIR $GOPATH