Don't bail out if image doesn't exist locally

The backend will figure out if we have the image or not, otherwise will
atempt to pull if not there.

Skip retrieve integration test with img as its not supported.

pkg/compiler/backend/diff.go

@@ -21,6 +21,8 @@ import (
 	"path/filepath"
 	"strings"
 
+	. "github.com/mudler/luet/pkg/logger"
+
 	"github.com/mudler/luet/pkg/compiler"
 	"github.com/mudler/luet/pkg/config"
 	"github.com/pkg/errors"
@@ -78,6 +80,7 @@ func GenerateChanges(b compiler.CompilerBackend, fromImage, toImage compiler.Com
 		ImageName:   fromImage.ImageName,
 		Destination: srcRootFS,
 	}
+	Debug("Extracting source image", fromImage.ImageName)
 	err = b.ExtractRootfs(srcImageExtract, false) // No need to keep permissions as we just collect file diffs
 	if err != nil {
 		return []compiler.ArtifactLayer{}, errors.Wrap(err, "Error met while unpacking src image "+fromImage.ImageName)
@@ -87,6 +90,7 @@ func GenerateChanges(b compiler.CompilerBackend, fromImage, toImage compiler.Com
 		ImageName:   toImage.ImageName,
 		Destination: dstRootFS,
 	}
+	Debug("Extracting destination image", toImage.ImageName)
 	err = b.ExtractRootfs(dstImageExtract, false)
 	if err != nil {
 		return []compiler.ArtifactLayer{}, errors.Wrap(err, "Error met while unpacking dst image "+toImage.ImageName)

pkg/compiler/backend/simpledocker.go

@@ -175,7 +175,7 @@ func (*SimpleDocker) ExportImage(opts compiler.CompilerBackendOptions) error {
 		return errors.Wrap(err, "Failed exporting image: "+string(out))
 	}
 
-	Info(":whale: Exported image:", name)
+	Debug(":whale: Exported image:", name)
 	return nil
 }
 

pkg/compiler/backend/simpleimg.go

@@ -164,7 +164,7 @@ func (s *SimpleImg) ExtractRootfs(opts compiler.CompilerBackendOptions, keepPerm
 	if err != nil {
 		return errors.Wrap(err, "Failed extracting image: "+string(out))
 	}
-	Info(":tea: Image " + name + " extracted")
+	Debug(":tea: Image " + name + " extracted")
 	return nil
 }
 

pkg/compiler/compiler.go

@@ -288,8 +288,6 @@ func (cs *LuetCompiler) unpackDelta(concurrency int, keepPermissions bool, p Com
 		if err != nil {
 			return nil, errors.Wrap(err, "Could not pull image")
 		}
-	} else if !cs.Backend.ImageExists(builderOpts.ImageName) {
-		return nil, errors.New("No image found for " + builderOpts.ImageName)
 	}
 
 	Info(pkgTag, ":hammer: Generating delta")
@@ -298,6 +296,7 @@ func (cs *LuetCompiler) unpackDelta(concurrency int, keepPermissions bool, p Com
 		return nil, errors.Wrap(err, "Could not generate changes from layers")
 	}
 
+	Debug("Extracting image to grab files from delta")
 	if err := cs.Backend.ExtractRootfs(CompilerBackendOptions{
 		ImageName: runnerOpts.ImageName, Destination: rootfs}, keepPermissions); err != nil {
 		return nil, errors.Wrap(err, "Could not extract rootfs")

tests/integration/04_retrieve.sh

@@ -12,6 +12,7 @@ oneTimeTearDown() {
 
 testBuild() {
     mkdir $tmpdir/testbuild
+    [ "$LUET_BACKEND" == "img" ] && startSkipping
     luet build --tree "$ROOT_DIR/tests/fixtures/retrieve-integration" --destination $tmpdir/testbuild --compression gzip test/b
     buildst=$?
     assertEquals 'builds successfully' "$buildst" "0"
@@ -20,6 +21,7 @@ testBuild() {
 }
 
 testRepo() {
+    [ "$LUET_BACKEND" == "img" ] && startSkipping
     assertTrue 'no repository' "[ ! -e '$tmpdir/testbuild/repository.yaml' ]"
     luet create-repo --tree "$ROOT_DIR/tests/fixtures/retrieve-integration" \
     --output $tmpdir/testbuild \
@@ -59,6 +61,7 @@ EOF
 
 
 testInstall() {
+    [ "$LUET_BACKEND" == "img" ] && startSkipping
     luet install -y --config $tmpdir/luet.yaml test/b
     #luet install -y --config $tmpdir/luet.yaml test/c-1.0 > /dev/null
     installst=$?
@@ -71,6 +74,7 @@ testInstall() {
 
 
 testUnInstall() {
+    [ "$LUET_BACKEND" == "img" ] && startSkipping
     luet uninstall -y --full --config $tmpdir/luet.yaml test/b
     installst=$?
     assertEquals 'uninstall test successfully' "$installst" "0"
@@ -80,6 +84,7 @@ testUnInstall() {
 
 
 testCleanup() {
+    [ "$LUET_BACKEND" == "img" ] && startSkipping
     luet cleanup --config $tmpdir/luet.yaml
     installst=$?
     assertEquals 'install test successfully' "$installst" "0"