CI: fix search-test flakes

Seeing constant e2e test failures today, in search tests.

Reason: tests are searching for "alpine", which is common,
and we're hitting pollution.

Solution: search for "testdigest_v2s<x>", an image in quay
under the libpod namespace. And, in other tests that rely
on docker.io, switch to quay.

Signed-off-by: Ed Santiago <santiago@redhat.com>

Author: edsantiago

test/e2e/search_test.go

@@ -75,19 +75,20 @@ registries = []`
 	})
 
 	It("podman search format flag", func() {
-		search := podmanTest.Podman([]string{"search", "--format", "table {{.Index}} {{.Name}}", "alpine"})
+		search := podmanTest.Podman([]string{"search", "--format", "table {{.Index}} {{.Name}}", "testdigest_v2s2"})
 		search.WaitWithDefaultTimeout()
 		Expect(search).Should(ExitCleanly())
 		Expect(len(search.OutputToStringArray())).To(BeNumerically(">", 1))
-		Expect(search.OutputToString()).To(ContainSubstring("docker.io/library/alpine"))
+		Expect(search.OutputToString()).To(ContainSubstring("quay.io/libpod/testdigest_v2s2"))
 	})
 
 	It("podman search format json", func() {
-		search := podmanTest.Podman([]string{"search", "--format", "json", "busybox"})
+		search := podmanTest.Podman([]string{"search", "--format", "json", "testdigest_v2s1"})
 		search.WaitWithDefaultTimeout()
 		Expect(search).Should(ExitCleanly())
 		Expect(search.OutputToString()).To(BeValidJSON())
-		Expect(search.OutputToString()).To(ContainSubstring("docker.io/library/busybox"))
+		Expect(search.OutputToString()).To(ContainSubstring("quay.io/libpod/testdigest_v2s1"))
+		Expect(search.OutputToString()).To(ContainSubstring("Test image used by buildah regression tests"))
 
 		// Test for https://github.com/containers/podman/issues/11894
 		contents := make([]entities.ImageSearchReport, 0)
@@ -123,17 +124,17 @@ registries = []`
 	})
 
 	It("podman search limit flag", func() {
-		search := podmanTest.Podman([]string{"search", "docker.io/alpine"})
+		search := podmanTest.Podman([]string{"search", "quay.io/alpine"})
 		search.WaitWithDefaultTimeout()
 		Expect(search).Should(ExitCleanly())
 		Expect(len(search.OutputToStringArray())).To(BeNumerically(">", 10))
 
-		search = podmanTest.Podman([]string{"search", "--limit", "3", "docker.io/alpine"})
+		search = podmanTest.Podman([]string{"search", "--limit", "3", "quay.io/alpine"})
 		search.WaitWithDefaultTimeout()
 		Expect(search).Should(ExitCleanly())
 		Expect(search.OutputToStringArray()).To(HaveLen(4))
 
-		search = podmanTest.Podman([]string{"search", "--limit", "30", "docker.io/alpine"})
+		search = podmanTest.Podman([]string{"search", "--limit", "30", "quay.io/alpine"})
 		search.WaitWithDefaultTimeout()
 		Expect(search).Should(ExitCleanly())
 		Expect(search.OutputToStringArray()).To(HaveLen(31))
@@ -382,23 +383,34 @@ registries = []`
 	})
 
 	It("podman search repository tags", func() {
-		search := podmanTest.Podman([]string{"search", "--list-tags", "--limit", "30", "docker.io/library/alpine"})
+		search := podmanTest.Podman([]string{"search", "--list-tags", "--limit", "30", "quay.io/podman/stable"})
 		search.WaitWithDefaultTimeout()
 		Expect(search).Should(ExitCleanly())
 		Expect(search.OutputToStringArray()).To(HaveLen(31))
 
-		search = podmanTest.Podman([]string{"search", "--list-tags", "docker.io/library/alpine"})
+		search = podmanTest.Podman([]string{"search", "--list-tags", "quay.io/podman/stable"})
 		search.WaitWithDefaultTimeout()
 		Expect(search).Should(ExitCleanly())
 		Expect(len(search.OutputToStringArray())).To(BeNumerically(">", 2))
 
-		search = podmanTest.Podman([]string{"search", "--filter=is-official", "--list-tags", "docker.io/library/alpine"})
+		search = podmanTest.Podman([]string{"search", "--filter=is-official", "--list-tags", "quay.io/podman/stable"})
 		search.WaitWithDefaultTimeout()
-		Expect(search).To(ExitWithError())
+		Expect(search).To(Exit(125))
+		Expect(search.ErrorToString()).To(ContainSubstring("filters are not applicable to list tags result"))
+
+		// With trailing slash
+		search = podmanTest.Podman([]string{"search", "--list-tags", "quay.io/podman/"})
+		search.WaitWithDefaultTimeout()
+		Expect(search).To(Exit(125))
+		Expect(search.OutputToStringArray()).To(BeEmpty())
+		Expect(search.ErrorToString()).To(ContainSubstring("must be a docker reference"))
 
-		search = podmanTest.Podman([]string{"search", "--list-tags", "docker.io/library/"})
+		// No trailing slash
+		search = podmanTest.Podman([]string{"search", "--list-tags", "quay.io/podman"})
 		search.WaitWithDefaultTimeout()
+		Expect(search).To(Exit(125))
 		Expect(search.OutputToStringArray()).To(BeEmpty())
+		Expect(search.ErrorToString()).To(ContainSubstring("fetching tags list: StatusCode: 404"))
 	})
 
 	It("podman search with limit over 100", func() {