add apache-tomcat container

Signed-off-by: Wang, Long <long1.wang@intel.com>

.travis.yml

@@ -22,15 +22,16 @@ env:
   - DOCKERFILE_DIR=node
   - DOCKERFILE_DIR=openjdk
   - DOCKERFILE_DIR=os-core
-  - DOCKERFILE_DIR=rabbitmq
   - DOCKERFILE_DIR=perl
   - DOCKERFILE_DIR=php
   - DOCKERFILE_DIR=php-fpm
   - DOCKERFILE_DIR=postgres
   - DOCKERFILE_DIR=python
+  - DOCKERFILE_DIR=rabbitmq
   - DOCKERFILE_DIR=redis
   - DOCKERFILE_DIR=ruby
   - DOCKERFILE_DIR=tensorflow
+  - DOCKERFILE_DIR=tomcat
   - DOCKERFILE_DIR=wordpress
 
 script:

tomcat/Dockerfile

@@ -0,0 +1,36 @@
+FROM clearlinux:latest AS builder
+MAINTAINER long1.wang@intel.com
+
+ARG swupd_args
+# Move to latest Clear Linux release to ensure
+# that the swupd command line arguments are
+# correct
+RUN swupd update --no-boot-update $swupd_args
+
+# Grab os-release info from the minimal base image so
+# that the new content matches the exact OS version
+COPY --from=clearlinux/os-core:latest /usr/lib/os-release /
+
+# Install additional content in a target directory
+# using the os version from the minimal base
+RUN source /os-release && \
+    mkdir /install_root \
+    && swupd os-install -V ${VERSION_ID} \
+    --path /install_root --statedir /swupd-state \
+    --bundles=apache-tomcat --no-boot-update
+
+# For some Host OS configuration with redirect_dir on,
+# extra data are saved on the upper layer when the same
+# file exists on different layers. To minimize docker
+# image size, remove the overlapped files before copy.
+RUN mkdir /os_core_install
+COPY --from=clearlinux/os-core:latest / /os_core_install/
+RUN cd / && \
+    find os_core_install | sed -e 's/os_core_install/install_root/' | xargs rm -d &> /dev/null || true
+
+FROM clearlinux/os-core:latest
+
+COPY --from=builder /install_root /
+
+EXPOSE 8080
+CMD ["catalina.sh", "run"]

tomcat/README.md

@@ -0,0 +1,31 @@
+tomcat
+==========
+This provides a Clear Linux* apache-tomcat container
+
+Build
+-----
+```
+docker build -t clearlinux/tomcat .
+```
+
+Or just pull it from Dockerhub
+---------------------------
+```
+docker pull clearlinux/tomcat
+```
+
+Run apache-tomcat instance
+-----------------------
+```
+docker run --rm -it --hostname my-tomcat --name some-tomcat -p 8080:8080 clearlinux/tomcat
+```
+
+Details of how-to
+---------------------
+- Please refer to the docker official tomcat image [page](https://hub.docker.com/_/tomcat).
+
+Extra Build ARGs
+----------------
+- ``swupd_args`` Specifies [SWUPD](https://github.com/clearlinux/swupd-client/blob/master/docs/swupd.1.rst#options) flags
+
+Default build args in Docker are on: https://docs.docker.com/engine/reference/builder/#arg