Make tests/integration/Dockerfile.test more secure

Signed-off-by: Manuel Buil <mbuil@suse.com>

Author: manuelbuil

tests/integration/Dockerfile.test

@@ -3,8 +3,8 @@ FROM golang:buster
 # Enables integration tests to run on existing cluster via Sonobuoy plugin
 
 RUN apt update && \
-    apt install -y curl git lsof bash openssh-server gcc g++ make ca-certificates && \
-    curl https://raw.githubusercontent.com/golang/dep/master/install.sh | sh
+    apt install -y --no-install-recommends git lsof bash openssh-server gcc g++ make ca-certificates && \
+    rm -rf /var/lib/apt/lists/*
 
 WORKDIR $GOPATH/src/github.com/k3s-io/k3s-io/k3s/
 
@@ -13,5 +13,5 @@ COPY ./tests/integration/test-runner.sh .
 COPY ./dist/artifacts/k3s /usr/local/bin
 COPY ./dist/artifacts/k3s-integration-* ./tests/
 
-RUN go install -u github.com/onsi/gomega
-RUN go install -u github.com/onsi/ginkgo
+RUN go install github.com/onsi/ginkgo/v2/ginkgo@v2.17.1
+RUN go install github.com/onsi/gomega@v1.32.0