Docker support

.dockerignore

@@ -0,0 +1 @@
+build/

Dockerfile

@@ -0,0 +1,26 @@
+# syntax=docker/dockerfile:1.4
+
+#
+# Build Stage
+#
+
+FROM gradle:6-jdk8 as builder
+
+COPY --link . /app/gaiden
+WORKDIR /app/gaiden
+RUN --mount=type=cache,target=/home/gradle/.gradle,sharing=private \
+    gradle --no-daemon install
+
+#
+# Runtime Stage
+#
+
+FROM openjdk:8-alpine
+
+COPY --link --from=builder /app/gaiden/build/install/gaiden /usr/local/gaiden
+ENV PATH=/usr/local/gaiden/bin:${PATH} \
+    GAIDEN_WATCH_PORT=8080 \
+    GAIDEN_OUTPUT_DIR=build
+WORKDIR /app
+EXPOSE 8080
+ENTRYPOINT ["gaiden"]

build.gradle

@@ -43,3 +43,9 @@ apply from: "gradle/distribution.gradle"
 apply from: "gradle/sample.gradle"
 apply from: "gradle/sdkman.gradle"
 apply from: "gradle/doc.gradle"
+
+task buildDockerImage(type: Exec) {
+    group "build"
+    description "Build docker image."
+    commandLine "docker build -t kobo/gaiden:latest -t kobo/gaiden:${project.version} .".split(' ')
+}

gaiden-core/src/main/groovy/gaiden/GaidenConfig.groovy

@@ -76,7 +76,7 @@ class GaidenConfig {
     Path sourceDirectory = defaultProjectDirectory
 
     /** The path of directory to be outputted a document */
-    Path outputDirectory = defaultProjectDirectory.resolve(DEFAULT_BUILD_DIRECTORY)
+    Path outputDirectory = defaultProjectDirectory.resolve(System.getenv("GAIDEN_OUTPUT_DIR") ?: DEFAULT_BUILD_DIRECTORY)
 
     /** The base name of a zipped archive of HTML files */
     String distFileName = DEFAULT_DIST_FILE_NAME
@@ -109,14 +109,13 @@ class GaidenConfig {
 
     boolean readmeToIndex = true
 
-
     List<String> assetTypes = ["jpg", "jpeg", "png", "gif"]
 
     Map<String, Filter> filters = [:] as LinkedHashMap
 
     SortedMap<String, Extension> extensions = new TreeMap<>()
 
-    int watchPort = 0
+    int watchPort = Integer.parseInt(System.getenv("GAIDEN_WATCH_PORT") ?: "0")
 
     Path getApplicationInitialProjectTemplateDirectory() {
         applicationDirectory.resolve(PROJECT_TEMPLATE_DIRECTORY)
@@ -193,6 +192,9 @@ class GaidenConfig {
     }
 
     void setOutputDirectoryPath(String outputDirectoryPath) {
+        if (System.getenv("GAIDEN_OUTPUT_DIR")) {
+            return // just ignored
+        }
         outputDirectory = projectDirectory.resolve(outputDirectoryPath)
     }
 
@@ -212,6 +214,13 @@ class GaidenConfig {
         })
     }
 
+    void setWatchPort(int watchPort) {
+        if (System.getenv("GAIDEN_WATCH_PORT")) {
+            return // just ignored
+        }
+        this.watchPort = watchPort
+    }
+
     @PostConstruct
     void initialize() {
         loadExtensions(extensionsDirectory)

gaiden-core/src/main/groovy/gaiden/command/WatchCommand.groovy

@@ -47,6 +47,7 @@ class WatchCommand extends AbstractCommand {
     void execute(CommandLine commandLine) {
         server = new EmbeddedHttpServer(gaidenConfig.watchPort, gaidenConfig.outputDirectory)
         server.start()
+        println getMessage("command.watch.server.message", [server.port])
 
         // At first, normally build a documentation.
         build()

gaiden-core/src/main/resources/messages.properties

@@ -44,6 +44,7 @@ command.install.theme.overwrite.confirmation.message=Overwrite existing file {0}
 command.install.theme.overwrite.invalid.answer.error=Must be one of [y/n/a]
 command.install.theme.success.message=Installed the theme at {0}
 command.wrapper.success.message=Installed wrapper files
+command.watch.server.message=Web server is available at http://127.0.0.1:{0,number,#}/
 command.watch.start.message=Watching {0}...
 command.watch.found.message=Found {1} {0}
 command.watch.rebuild.message=Rebuilding...

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.2-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.9.3-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists