build: Added 'make build' for building releases

Makefile

@@ -3,9 +3,15 @@
 #
 all:
 	@echo '🌈 Makefile targets'
-	@echo 'make clean      — Cleanup intermediary files'
-	@echo 'make setup      — Setup development environment'
-	@echo 'make test       — Tests & code style checks'
+	@echo ' · make clean      — Cleanup intermediary files'
+	@echo ' · make setup      — Setup development environment'
+	@echo ' · make build      — Build release artefacts'
+	@echo ' · make test       — Tests & code style checks'
+	@echo
+	@echo '🚀 Release builds'
+	@echo ' · VERSION=2022.08 make build'
+	@echo
+	@echo '📍 Apache Ant (and Java) must be installed separately.'
 
 
 #
@@ -22,6 +28,13 @@ setup: clean
 	npm install --no-optional
 
 
+#
+# Build release artefacts
+#
+build:
+	ant package
+
+
 #
 # Tests & code style checks
 #

build.xml

@@ -16,11 +16,17 @@
 <project default="package">
 
 <!-- INITIALIZATION -->
+  <property environment="env"/>
   <property file="build.properties" />
   <tstamp>
-    <format property="build.date" pattern="yyyy-MM-dd" />
+    <format property="build.today" pattern="yyyy-MM-dd" />
   </tstamp>
-  <property name="build.version" value="${DSTAMP}" />
+  <condition property="build.date" value="${env.DATE}" else="${build.today}">
+    <isset property="env.DATE" />
+  </condition>
+  <condition property="build.version" value="${env.VERSION}" else="${DSTAMP}">
+    <isset property="env.VERSION" />
+  </condition>
   <property name="build.platform" value="${build.version}" />
   <path id="build.classpath">
     <fileset dir="lib" includes="**/*.jar" />