Merge branch '69-kubectl-1.17' into 'master'

Add kubectl 1.17/Helm 3.5.3-based image

Closes #69

See merge request gitlab-org/gitlab-build-images!387

.gitlab-ci.yml

@@ -114,7 +114,7 @@ danger test: *test_build
 alpine-helm test: *test_build
 gitlab-charts-build-base test: *test_build
 gitlab-charts-build-base-helm-3 test: *test_build
-gitlab-helm3-kubectl1.14 test: *test_build
+gitlab-helm3.5-kubectl1.17 test: *test_build
 gitlab-qa-ruby-2.7 test: *test_build
 gitlab-qa-ruby-3.0 test: *test_build
 gitlab-qa-alpine-ruby-2.7 test: *test_build
@@ -187,7 +187,7 @@ danger push: *build_and_deploy
 alpine-helm push: *build_and_deploy
 gitlab-charts-build-base push: *build_and_deploy
 gitlab-charts-build-base-helm-3 push: *build_and_deploy
-gitlab-helm3-kubectl1.14 push: *build_and_deploy
+gitlab-helm3.5-kubectl1.17 push: *build_and_deploy
 gitlab-qa-ruby-2.7 push: *build_and_deploy
 gitlab-qa-ruby-3.0 push: *build_and_deploy
 gitlab-qa-alpine-ruby-2.7 push: *build_and_deploy

Dockerfile.gitlab-helm3.5-kubectl1.17

@@ -0,0 +1,27 @@
+FROM ruby:3.0.0-alpine
+MAINTAINER GitLab Engineering Productivity Team
+
+ENV KUBECTL_VERSION=1.17.17
+
+ENV HELM_VERSION=3.5.3
+ENV HELM_URL=https://get.helm.sh/helm-v${HELM_VERSION}-linux-amd64.tar.gz
+ENV HELM_HOME=/root/.helm
+
+# Install dependencies
+RUN apk --no-cache -U add openssl curl tar gzip bash ca-certificates git \
+  && mkdir -p /opt
+
+# Install kubectl
+RUN wget https://dl.k8s.io/release/v${KUBECTL_VERSION}/bin/linux/amd64/kubectl \
+  && install -o root -g root -m 0755 kubectl /usr/local/bin/kubectl \
+  && rm -f kubectl
+
+# Install Helm
+RUN wget -q -O - ${HELM_URL} | tar zxf - \
+  && mv linux-amd64/helm /usr/bin/ \
+  && chmod +x /usr/bin/helm \
+  && helm version --client
+
+# Install kubeval
+RUN mkdir -p $HELM_HOME/plugins \
+  && helm plugin install https://github.com/instrumenta/helm-kubeval