@@ -161,7 +161,7 @@ func (d DockerCompose) discoverDockerComposeImageManifests() ([][]byte, error) {
 				tagFilter = ""
 				if err != nil {
 					logrus.Debugf("building version filter pattern: %s", err)
-					sourceSpec.VersionFilter.Pattern = "*"
+					versionFilterPattern = "*"
 				}
 			}
 
@@ -187,7 +187,7 @@ func (d DockerCompose) discoverDockerComposeImageManifests() ([][]byte, error) {
 				}
 			} else {
 				logrus.Infoln("No source spec detected")
-				return nil, nil
+				continue
 			}
 
 			params := struct {
 
@@ -6,22 +6,24 @@ import (
 	"github.com/stretchr/testify/assert"
 	"github.com/stretchr/testify/require"
 	"github.com/updatecli/updatecli/pkg/plugins/utils/docker"
+	"github.com/updatecli/updatecli/pkg/plugins/utils/version"
 )
 
 func TestDiscoverManifests(t *testing.T) {
-
 	testdata := []struct {
 		name              string
 		rootDir           string
 		digest            bool
 		Auths             map[string]docker.InlineKeyChain
+		versionFilter     version.Filter
 		expectedPipelines []string
 	}{
 		{
 			name:    "Scenario 1 - digest",
 			rootDir: "testdata",
 			digest:  true,
-			expectedPipelines: []string{`name: 'deps(dockercompose): bump "jenkinsci/jenkins" digest'
+			expectedPipelines: []string{
+				`name: 'deps(dockercompose): bump "jenkinsci/jenkins" digest'
 sources:
   jenkins-lts:
     name: 'get latest image tag for "jenkinsci/jenkins"'
@@ -92,7 +94,8 @@ targets:
 					Token: "mysecretToken",
 				},
 			},
-			expectedPipelines: []string{`name: 'deps(dockercompose): bump "jenkinsci/jenkins" tag'
+			expectedPipelines: []string{
+				`name: 'deps(dockercompose): bump "jenkinsci/jenkins" tag'
 sources:
   jenkins-lts:
     name: 'get latest image tag for "jenkinsci/jenkins"'
@@ -137,6 +140,40 @@ targets:
     sourceid: 'jenkins-weekly'
     transformers:
       - addprefix: 'jenkinsci/jenkins:'
+`,
+			},
+		},
+		{
+			// A tag that Masterminds semver cannot parse at all leaves a nil
+			// dockerimage spec and fails GreaterThanPattern. That service has to be
+			// skipped without crashing, and without discarding the manifest already
+			// found for the service listed before it.
+			name:          "Scenario 3 - no digest, tag not parseable as a version",
+			rootDir:       "testdata-unparsable-tag",
+			digest:        false,
+			versionFilter: version.Filter{Kind: "semver", Pattern: "patch"},
+			expectedPipelines: []string{
+				`name: 'deps(dockercompose): bump "jenkinsci/jenkins" tag'
+sources:
+  a-pinned:
+    name: 'get latest image tag for "jenkinsci/jenkins"'
+    kind: 'dockerimage'
+    spec:
+      image: 'jenkinsci/jenkins'
+      tagfilter: ''
+      versionfilter:
+        kind: 'semver'
+        pattern: '2.150.x'
+targets:
+  a-pinned:
+    name: 'deps: update Docker image "jenkinsci/jenkins" to "{{ source "a-pinned" }}"'
+    kind: 'yaml'
+    spec:
+      file: 'docker-compose.yaml'
+      key: '$.services.a-pinned.image'
+    sourceid: 'a-pinned'
+    transformers:
+      - addprefix: 'jenkinsci/jenkins:'
 `,
 			},
 		},
@@ -147,8 +184,9 @@ targets:
 			digest := tt.digest
 			composefile, err := New(
 				Spec{
-					Digest: &digest,
-					Auths:  tt.Auths,
+					Digest:        &digest,
+					Auths:         tt.Auths,
+					VersionFilter: tt.versionFilter,
 				}, tt.rootDir, "", "")
 
 			require.NoError(t, err)
@@ -169,8 +207,6 @@ targets:
 				pipelines = append(pipelines, string(rawPipelines[i]))
 				assert.Equal(t, tt.expectedPipelines[i], pipelines[i])
 			}
-
 		})
 	}
-
 }
@@ -0,0 +1,8 @@
+services:
+  # A tag Masterminds semver cannot parse at all makes GreaterThanPattern fail and
+  # NewDockerImageSpecFromImage return a nil spec. This service must be skipped
+  # without crashing, and without discarding the manifest found for a-pinned.
+  z-unparsable-tag:
+    image: jenkinsci/jenkins:latest
+  a-pinned:
+    image: jenkinsci/jenkins:2.150.1
Original file line number	Diff line number	Diff line change
`@@ -161,7 +161,7 @@ func (d DockerCompose) discoverDockerComposeImageManifests() ([][]byte, error) {`
`161`	`161`	`tagFilter = ""`
`162`	`162`	`if err != nil {`
`163`	`163`	`logrus.Debugf("building version filter pattern: %s", err)`
`164`		`- sourceSpec.VersionFilter.Pattern = "*"`
	`164`	`+ versionFilterPattern = "*"`
`165`	`165`	`}`
`166`	`166`	`}`
`167`	`167`
`@@ -187,7 +187,7 @@ func (d DockerCompose) discoverDockerComposeImageManifests() ([][]byte, error) {`
`187`	`187`	`}`
`188`	`188`	`} else {`
`189`	`189`	`logrus.Infoln("No source spec detected")`
`190`		`- return nil, nil`
	`190`	`+ continue`
`191`	`191`	`}`
`192`	`192`
`193`	`193`	`params := struct {`