resolves #313 restore ue4-engine image

Also, drop deprecated for more than a year `--no-full`/`--no-minimal` options and just use `--target`.

docs/ue4-docker-build.adoc

@@ -87,12 +87,6 @@ Monitor resource usage during builds (useful for debugging)
 *--no-cache*::
 Disable Docker build cache
 
-*--no-full*::
-Don't build the ue4-full image (deprecated, use *--target* _target_ instead)
-
-*--no-minimal*::
-Don't build the ue4-minimal image (deprecated, use *--target* _target_ instead)
-
 *--opt* _opt_::
 Set an advanced configuration option (can be specified multiple times to specify multiple options)
 
@@ -111,9 +105,11 @@ Add a suffix to the tags of the built images
 *--target* _target_::
 Tells ue4-docker to build specific image (including its dependencies).
 +
-Supported values: `all`, `build-prerequisites`, `full`, `minimal`, `source`.
+Supported values: `all`, `build-prerequisites`, `full`, `minimal`, `source`, `engine`.
 +
 You can specify the `--target` option multiple times.
++
+Defaults to `minimal`.
 
 *-ue4cli* _ue4cli_::
 Override the default version of ue4cli installed in the ue4-full image

src/ue4docker/build.py

@@ -439,12 +439,21 @@ def build():
             else:
                 logger.info("Skipping ue4-source image build.")
 
-            if config.buildTargets["minimal"]:
+            if config.buildTargets["minimal"] or config.buildTargets["engine"]:
                 ue4BuildArgs = prereqConsumerArgs + [
                     "--build-arg",
                     "TAG={}".format(mainTags[1]),
                 ]
 
+            # Build the UE4 Engine source build image, unless requested otherwise by the user
+            if config.buildTargets["engine"]:
+                builder.build_builtin_image(
+                    "ue4-engine",
+                    mainTags,
+                    commonArgs + config.platformArgs + ue4BuildArgs,
+                )
+                builtImages.append("ue4-engine")
+
             # Build the minimal UE4 CI image, unless requested otherwise by the user
             if config.buildTargets["minimal"]:
                 minimalArgs = (

src/ue4docker/clean.py

@@ -28,6 +28,7 @@ def clean():
         "-tag", default=None, help="Only clean images with the specified tag"
     )
     parser.add_argument("--source", action="store_true", help="Clean ue4-source images")
+    parser.add_argument("--engine", action="store_true", help="Clean ue4-engine images")
     parser.add_argument(
         "--all", action="store_true", help="Clean all ue4-docker images"
     )
@@ -52,25 +53,34 @@ def clean():
     cleaner.cleanMultiple(dangling, args.dry_run)
 
     # If requested, remove ue4-source images
-    if args.source == True:
+    if args.source:
         _cleanMatching(
             cleaner,
             GlobalConfiguration.resolveTag("ue4-source"),
             args.tag,
             args.dry_run,
         )
 
+    # If requested, remove ue4-engine images
+    if args.engine:
+        _cleanMatching(
+            cleaner,
+            GlobalConfiguration.resolveTag("ue4-engine"),
+            args.tag,
+            args.dry_run,
+        )
+
     # If requested, remove everything
-    if args.all == True:
+    if args.all:
         _cleanMatching(
             cleaner, GlobalConfiguration.resolveTag("ue4-*"), args.tag, args.dry_run
         )
 
     # If requested, run `docker system prune`
-    if args.prune == True:
+    if args.prune:
         logger.action("Running `docker system prune`...")
         pruneCommand = ["docker", "system", "prune", "-f"]
-        if args.dry_run == True:
+        if args.dry_run:
             print(pruneCommand)
         else:
             subprocess.call(pruneCommand)

src/ue4docker/dockerfiles/ue4-engine/linux/Dockerfile

@@ -0,0 +1,15 @@
+{% if combine %}
+FROM source as engine
+{% else %}
+ARG NAMESPACE
+ARG TAG
+ARG PREREQS_TAG
+FROM ${NAMESPACE}/ue4-source:${TAG}-${PREREQS_TAG}
+{% endif %}
+
+# Build UBT and build the Engine
+# TODO: Fix UE4 compatibility
+# RUN ./Engine/Build/BatchFiles/Linux/Build.sh UE4Editor Linux Development -WaitMutex
+RUN ./Engine/Build/BatchFiles/Linux/Build.sh UnrealEditor Linux Development -WaitMutex
+RUN ./Engine/Build/BatchFiles/Linux/Build.sh ShaderCompileWorker Linux Development -WaitMutex
+RUN ./Engine/Build/BatchFiles/Linux/Build.sh UnrealPak Linux Development -WaitMutex

src/ue4docker/dockerfiles/ue4-engine/windows/Dockerfile

@@ -0,0 +1,17 @@
+# escape=`
+{% if combine %}
+FROM source as engine
+{% else %}
+ARG NAMESPACE
+ARG TAG
+ARG PREREQS_TAG
+FROM ${NAMESPACE}/ue4-source:${TAG}-${PREREQS_TAG}
+{% endif %}
+
+# Build UBT and build the Engine
+RUN GenerateProjectFiles.bat
+# TODO: Fix UE4 compatibility
+# RUN .\Engine\Build\BatchFiles\Build.bat UE4Editor Win64 Development -WaitMutex
+RUN .\Engine\Build\BatchFiles\Build.bat UnrealEditor Win64 Development -WaitMutex
+RUN .\Engine\Build\BatchFiles\Build.bat ShaderCompileWorker Win64 Development -WaitMutex
+RUN .\Engine\Build\BatchFiles\Build.bat UnrealPak Win64 Development -WaitMutex

src/ue4docker/infrastructure/BuildConfiguration.py

@@ -125,23 +125,14 @@ def addArguments(parser):
             action="store_true",
             help="Print `docker build` commands instead of running them",
         )
-        parser.add_argument(
-            "--no-minimal",
-            action="store_true",
-            help="Don't build the ue4-minimal image (deprecated, use --target instead)",
-        )
-        parser.add_argument(
-            "--no-full",
-            action="store_true",
-            help="Don't build the ue4-full image (deprecated, use --target instead)",
-        )
         parser.add_argument(
             "--no-cache", action="store_true", help="Disable Docker build cache"
         )
         parser.add_argument(
             "--target",
             action="append",
-            help="Add a target to the build list. Valid targets are `build-prerequisites`, `source`, `engine`, `minimal`, `full`, and `all`. May be specified multiple times or comma-separated. Defaults to `all`.",
+            default=[],
+            help="Add a target to the build list. Valid targets are `build-prerequisites`, `source`, `engine`, `minimal`, `full`, and `all`. May be specified multiple times or comma-separated. Defaults to `minimal`.",
         )
         parser.add_argument(
             "--random-memory",
@@ -282,47 +273,12 @@ def __init__(self, parser, argv, logger):
         self.args = parser.parse_args(argv)
         self.changelist = self.args.changelist
 
-        # Figure out what targets we have; this is needed to find out if we need --ue-version.
-        using_target_specifier_old = self.args.no_minimal or self.args.no_full
-        using_target_specifier_new = self.args.target is not None
-
-        # If we specified nothing, it's the same as specifying `minimal`
-        if not using_target_specifier_old and not using_target_specifier_new:
+        if len(self.args.target) <= 0:
             self.args.target = ["minimal"]
-        elif using_target_specifier_old and not using_target_specifier_new:
-            # Convert these to the new style
-            logger.warning(
-                "Using deprecated `--no-*` target specifiers; recommend changing to `--target`",
-                False,
-            )
-
-            # no-minimal implies no-full
-            if self.args.no_minimal:
-                self.args.no_full = True
 
-            # Change into target descriptors
-            self.args.target = []
-
-            if not self.args.no_full:
-                self.args.target += ["full"]
-
-            if not self.args.no_minimal:
-                self.args.target += ["minimal"]
-
-            # disabling these was never supported
-            self.args.target += ["source"]
-            self.args.target += ["build-prerequisites"]
-
-        elif using_target_specifier_new and not using_target_specifier_old:
-            # these can be token-delimited, so let's just split them apart and then remerge them into one list
-            split = [item.split(",") for item in self.args.target]
-            self.args.target = [item for sublist in split for item in sublist]
-
-        elif using_target_specifier_old and using_target_specifier_new:
-            # uhoh
-            raise RuntimeError(
-                "specified both `--target` and the old `--no-*` options; please use only `--target`!"
-            )
+        # these can be token-delimited, so let's just split them apart and then remerge them into one list
+        split_target = [item.split(",") for item in self.args.target]
+        self.args.target = [item for sublist in split_target for item in sublist]
 
         # Now that we have our options in `self.args.target`, evaluate our dependencies
         # In a theoretical ideal world this should be code-driven; if you find yourself adding a lot more code to this, consider a redesign!
@@ -336,6 +292,7 @@ def __init__(self, parser, argv, logger):
         self.buildTargets = {
             "build-prerequisites": False,
             "source": False,
+            "engine": False,
             "minimal": False,
             "full": False,
         }
@@ -355,6 +312,10 @@ def __init__(self, parser, argv, logger):
             self.buildTargets["minimal"] = True
             active_targets.add("source")
 
+        if "engine" in active_targets or "all" in active_targets:
+            self.buildTargets["engine"] = True
+            active_targets.add("source")
+
         if "source" in active_targets or "all" in active_targets:
             self.buildTargets["source"] = True
             active_targets.add("build-prerequisites")