diff --git a/README.md b/README.md
index 38d1cec..a99e8ff 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,11 @@ There is a minimal version, which contains only Apache Tika and it's core depend
 * Italian
 * Spanish.
 
-To install more languages simply update the apt-get command to include the package containing the language you required, or include your own custom packs using an ADD command.
+To install more languages simply use `docker-build.sh` or manually using [docker --build-arg](https://docs.docker.com/engine/reference/commandline/build/#set-build-time-variables---build-arg)
+
+Obtain a list of official Tesseract packages by executing (on Linux):
+
+    apt-cache search --names-only '^tesseract-ocr-[a-z]{3}$'
 
 ## Available Tags
 
diff --git a/docker-tool.sh b/docker-tool.sh
index 998312a..44199a7 100755
--- a/docker-tool.sh
+++ b/docker-tool.sh
@@ -21,11 +21,14 @@ while getopts ":h" opt; do
   case ${opt} in
     h )
       echo "Usage:"
-      echo "    docker-tool.sh -h                      Display this help message."
-      echo "    docker-tool.sh build <TIKA_VERSION>    Builds images for <TIKA_VERSION>."
-      echo "    docker-tool.sh test <TIKA_VERSION>     Tests images for <TIKA_VERSION>."
-      echo "    docker-tool.sh publish <TIKA_VERSION>  Publishes images for <TIKA_VERSION> to Docker Hub."
-      echo "    docker-tool.sh latest <TIKA_VERSION>   Tags images for <TIKA_VERSION> as latest on Docker Hub."
+      echo "    docker-tool.sh -h                                                              Display this help message."
+      echo "    docker-tool.sh build <TIKA_VERSION> [<TIKA_JAR_NAME>] [<TESSERACT_LANGUAGES>]  Builds images for <TIKA_VERSION>, apply [<TIKA_JAR_NAME>], via special [<TESSERACT_LANGUAGES>]."
+      echo "    docker-tool.sh test <TIKA_VERSION>                                             Tests images for <TIKA_VERSION>."
+      echo "    docker-tool.sh publish <TIKA_VERSION>                                          Publishes images for <TIKA_VERSION> to Docker Hub."
+      echo "    docker-tool.sh latest <TIKA_VERSION>                                           Tags images for <TIKA_VERSION> as latest on Docker Hub."
+      echo ""
+      echo "Note: [<TESSERACT_LANGUAGES>] is optional for full image,"
+      echo "      to customize various tesseract-ocr packages. Otherwise the default packages are installed."
       exit 0
       ;;
    \? )
@@ -59,19 +62,23 @@ shift $((OPTIND -1))
 subcommand=$1; shift
 version=$1; shift
 jar=$1; shift
+tesseract_languages=$@
 
 if [ -z "$jar" ]
 then
   jar="tika-server"
 fi
 
-
 case "$subcommand" in
   build)
+    build_args="--build-arg TIKA_VERSION=${version} --build-arg TIKA_JAR_NAME=${jar}"
+    if [[ ! -z "$tesseract_languages" ]]; then
+      build_args="$build_args --build-arg TESSERACT_LANGUAGES='${tesseract_languages}'"
+    fi
     # Build slim version with minimal dependencies
-    docker build -t apache/tika:${version} --build-arg TIKA_VERSION=${version} --build-arg TIKA_JAR_NAME=${jar} - < minimal/Dockerfile --no-cache
+    eval "docker build -t apache/tika:${version} ${build_args} - < minimal/Dockerfile --no-cache"
     # Build full version with OCR, Fonts and GDAL
-    docker build -t apache/tika:${version}-full --build-arg TIKA_VERSION=${version} --build-arg TIKA_JAR_NAME=${jar} - < full/Dockerfile --no-cache
+    eval "docker build -t apache/tika:${version}-full ${build_args} - < full/Dockerfile --no-cache"
     ;;
 
   test)
diff --git a/full/Dockerfile b/full/Dockerfile
index 38b85f1..fb60c70 100644
--- a/full/Dockerfile
+++ b/full/Dockerfile
@@ -14,9 +14,9 @@ RUN apt-get update
 
 FROM base as dependencies
 ARG JRE='openjdk-14-jre-headless'
+ARG TESSERACT_LANGUAGES='tesseract-ocr-eng tesseract-ocr-ita tesseract-ocr-fra tesseract-ocr-spa tesseract-ocr-deu'
 
-RUN DEBIAN_FRONTEND=noninteractive apt-get -y install $JRE gdal-bin tesseract-ocr \
-        tesseract-ocr-eng tesseract-ocr-ita tesseract-ocr-fra tesseract-ocr-spa tesseract-ocr-deu
+RUN DEBIAN_FRONTEND=noninteractive apt-get -y install $JRE gdal-bin tesseract-ocr $TESSERACT_LANGUAGES
 
 RUN echo ttf-mscorefonts-installer msttcorefonts/accepted-mscorefonts-eula select true | debconf-set-selections \
     && DEBIAN_FRONTEND=noninteractive apt-get install -y xfonts-utils fonts-freefont-ttf fonts-liberation ttf-mscorefonts-installer wget cabextract