adapt to new gke auth plugin

docker/polkadot-snapshot-engine/Dockerfile.template

@@ -1,10 +1,10 @@
 FROM google/cloud-sdk:slim
 
 # install  kubectl
-RUN apt-get -y --no-install-recommends install jq gettext && \
-curl -LO https://storage.googleapis.com/kubernetes-release/release/"$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)"/bin/linux/amd64/kubectl && \
- chmod +x ./kubectl && \
- mv ./kubectl /usr/local/bin
+RUN apt-get -y --no-install-recommends install jq gettext google-cloud-sdk-gke-gcloud-auth-plugin && \
+  curl -LO https://storage.googleapis.com/kubernetes-release/release/"$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)"/bin/linux/amd64/kubectl && \
+  chmod +x ./kubectl && \
+  mv ./kubectl /usr/local/bin
 
 COPY entrypoint.sh /snapshot-engine/
 

docker/polkadot-snapshot-engine/entrypoint.sh

@@ -4,6 +4,7 @@ set -e
 set -x
 
 # workload identity allows this to work
+export USE_GKE_GCLOUD_AUTH_PLUGIN=True
 gcloud container clusters get-credentials blockchain --region us-central1
 
 # first, delete old versions of pvc and snapshot that may still be present

docker/snapshot-uploader/Dockerfile.template

@@ -22,7 +22,9 @@ FROM google/cloud-sdk:alpine
 COPY --from=builder /usr/local/aws-cli/ /usr/local/aws-cli/
 COPY --from=builder /aws-cli-bin/ /usr/local/bin/
 
-RUN apk add --no-cache curl lz4 bash python3 && rm -rf /var/cache/apk/*
+RUN apk add --no-cache curl lz4 bash python3 && rm -rf /var/cache/apk/* && \
+  gcloud components install gke-gcloud-auth-plugin
+
 RUN aws --version   # Just to make sure its installed alright
 
 COPY entrypoint.sh /snapshot-uploader/

docker/snapshot-uploader/entrypoint.sh

@@ -1,5 +1,7 @@
 #!/bin/bash -ex
 # workload identity allows this to work
+export USE_GKE_GCLOUD_AUTH_PLUGIN=True
+gcloud components install gke-gcloud-auth-plugin
 gcloud container clusters get-credentials blockchain --region us-central1
 
 if [ "${CHAIN}" == "polkadot" ]; then