diff --git a/src/release/utils/mobi-meta.jar b/src/release/utils/mobi-meta.jar
new file mode 100644
index 0000000..9c45b57
Binary files /dev/null and b/src/release/utils/mobi-meta.jar differ
diff --git a/src/release/utils/release.py b/src/release/utils/release.py
index 3f3926e..13aa5eb 100644
--- a/src/release/utils/release.py
+++ b/src/release/utils/release.py
@@ -228,29 +228,28 @@ def mobiRelease(metadata: dict, content: dict, mobiType: int = 1) -> None:
 
 
 def setPdocMark(originFile: str, targetFile: str) -> None:
+    jdkImage = 'openjdk:17-alpine'
     tempDir = tempfile.TemporaryDirectory()  # access temporary directory
-
-    shutil.copy(originFile, os.path.join(tempDir.name, 'xxrs.azw3'))
-
-    # TODO: copy originFile -> tempDir.name
-    #   remember changing the originFile suffix
-
-    # TODO: fetch convert jar file (https://github.com/dnomd343/mobi-meta/releases/latest/download/mobi-meta.jar)
-
-    # TODO: run openjdk container and generate new eBook (openjdk:17-alpine)
-    #   java -jar mobi-meta.jar edit {xxrs.azw3} {xxrs_new.azw3} --pdoc
-
-    # TODO: copy output file as targetFile
-
-    pass
+    suffix = os.path.splitext(originFile)[-1]
+    shutil.copy(originFile, os.path.join(tempDir.name, 'xxrs%s' % suffix))
+    shutil.copy(
+        os.path.join(os.path.dirname(os.path.realpath(__file__)), 'mobi-meta.jar'),  # script folder
+        os.path.join(tempDir.name, 'mobi-meta.jar')
+    )
+    dockerCommand = 'docker run --rm -v %(src)s:%(tmp)s --workdir %(tmp)s --entrypoint sh %(img)s -c "%(cmd)s"' % {
+        'src': tempDir.name,
+        'tmp': '/xxrs/',
+        'img': jdkImage,
+        'cmd': 'java -jar mobi-meta.jar edit xxrs%s xxrs_mod%s --pdoc' % (suffix, suffix),
+    }
+    subprocess.Popen(dockerCommand, shell = True).wait()  # blocking wait
+    shutil.copy(os.path.join(tempDir.name, 'xxrs_mod%s' % suffix), targetFile)
+    tempDir.cleanup()
 
 
 def azw3Release(metadata: dict, content: dict) -> None:
     tempDir = tempfile.TemporaryDirectory()  # access temporary directory
     print('Calibre AZW3 Build -> %s' % tempDir.name)
     calibreBuild(tempDir.name, '.azw3', ['--mobi-toc-at-start'], metadata, content)
-
-    # TODO: change `[EBOK]` as `[PDOC]`
     setPdocMark(os.path.join(tempDir.name, './xxrs.azw3'), releaseInfo['azw3'])
-
     tempDir.cleanup()