Allow specification of podman --remote build -f -

Fixes: containers#17495

Signed-off-by: Daniel J Walsh <[email protected]>

Author: rhatdan

cmd/podman/images/build.go

@@ -218,7 +218,11 @@ func build(cmd *cobra.Command, args []string) error {
 	var containerFiles []string
 	for _, f := range buildOpts.File {
 		if f == "-" {
-			containerFiles = append(containerFiles, "/dev/stdin")
+			if len(args) == 0 {
+				args = append(args, "-")
+			} else {
+				containerFiles = append(containerFiles, "/dev/stdin")
+			}
 		} else {
 			containerFiles = append(containerFiles, f)
 		}

test/system/070-build.bats

@@ -101,6 +101,12 @@ EOF
     is "$output"   "$rand_content"   "reading generated file in image"
 
     run_podman rmi -f build_test
+
+    # Now try without specifying a context dir
+    run_podman build -t build_test -f - < $containerfile
+    is "$output" ".*COMMIT" "COMMIT seen in log"
+
+    run_podman rmi -f build_test
 }
 
 @test "podman build - global runtime flags test" {