kopia lustrzana https://github.com/jupyterhub/repo2docker
Initial commit
- Simple virtualenv based docker builder - Not re-using saved artifacts yet - No application tester - Installs Jupyter Notebooks and JupyterHub by defaultpull/6/head
commit
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.#*
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FROM ubuntu:16.10
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MAINTAINER Yuvi Panda <yuvipanda@gmail.com>
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LABEL io.openshift.s2i.scripts-url=image:///usr/libexec/s2i
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ENV APP_DIR /srv/app
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RUN apt-get update
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RUN apt-get install --yes python3 python3-venv tar
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RUN adduser --disabled-password --gecos "Default Jupyter user" jovyan
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RUN mkdir -p ${APP_DIR} && chown -R jovyan:jovyan /srv/app
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WORKDIR ${APP_DIR}
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USER jovyan
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RUN python3 -m venv venv
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# FIXME: Specify actual versions here
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RUN ${APP_DIR}/venv/bin/pip install --no-cache-dir jupyter jupyterhub
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COPY ./s2i/bin/ /usr/libexec/s2i
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EXPOSE 8888
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IMAGE_NAME = ubuntu1610-python35-venv
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.PHONY: build
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build:
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docker build -t $(IMAGE_NAME) .
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.PHONY: test
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test:
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docker build -t $(IMAGE_NAME)-candidate .
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IMAGE_NAME=$(IMAGE_NAME)-candidate test/run
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# Ubuntu 16.10 Python3 Virtualenv Jupyter Builder
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This is a builder image for use with [s2i](https://github.com/openshift/source-to-image). It
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builds a source repository (such as a github repository) into a usable Docker image, without
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the user having to use or understand Docker.
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It is based off Ubuntu 16.10, and uses [virtualenv](https://pypi.python.org/pypi/virtualenv) to
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provide a custom python3.5 environment.
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It looks for a `requirements.txt` file in the source repository, and installs it into the virtualenv.
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#!/bin/bash -e
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#
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# S2I assemble script for the 'ubuntu1610-python35-venv' image.
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# The 'assemble' script builds your application source so that it is ready to run.
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#
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# For more information refer to the documentation:
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# https://github.com/openshift/source-to-image/blob/master/docs/builder_image.md
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#
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# If the 'ubuntu1610-python35-venv' assemble script is executed with the '-h' flag, print the usage.
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if [[ "$1" == "-h" ]]; then
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exec /usr/libexec/s2i/usage
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fi
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# Restore artifacts from the previous build (if they exist).
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#
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if [ "$(ls /tmp/artifacts/ 2>/dev/null)" ]; then
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echo "---> Restoring build artifacts..."
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mv /tmp/artifacts/. ./
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fi
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echo "---> Installing application source..."
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cp -Rf /tmp/src/. ./
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echo "---> Building application from source..."
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${APP_DIR}/venv/bin/pip install --no-cache-dir -r requirements.txt
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#!/bin/bash -e
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#
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# S2I run script for the 'ubuntu1610-python35-venv' image.
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# The run script executes the server that runs your application.
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#
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# For more information see the documentation:
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# https://github.com/openshift/source-to-image/blob/master/docs/builder_image.md
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#
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exec ${APP_DIR}/venv/bin/jupyter notebook --ip=0.0.0.0
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#!/bin/sh -e
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#
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# S2I save-artifacts script for the 'ubuntu1610-python35-venv' image.
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# The save-artifacts script streams a tar archive to standard output.
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# The archive contains the files and folders you want to re-use in the next build.
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#
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# For more information see the documentation:
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# https://github.com/openshift/source-to-image/blob/master/docs/builder_image.md
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#
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# tar cf - <list of files and folders>
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#!/bin/bash -e
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cat <<EOF
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This is the ubuntu1610-python35-venv S2I image:
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To use it, install S2I: https://github.com/openshift/source-to-image
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Sample invocation:
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s2i build <source code path/URL> ubuntu1610-python35-venv <application image>
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You can then run the resulting image via:
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docker run <application image>
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EOF
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#!/bin/bash
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#
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# The 'run' performs a simple test that verifies the S2I image.
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# The main focus here is to exercise the S2I scripts.
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#
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# For more information see the documentation:
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# https://github.com/openshift/source-to-image/blob/master/docs/builder_image.md
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#
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# IMAGE_NAME specifies a name of the candidate image used for testing.
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# The image has to be available before this script is executed.
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#
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IMAGE_NAME=${IMAGE_NAME-ubuntu1610-python35-venv-candidate}
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# Determining system utility executables (darwin compatibility check)
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READLINK_EXEC="readlink"
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MKTEMP_EXEC="mktemp"
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if [[ "$OSTYPE" =~ 'darwin' ]]; then
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! type -a "greadlink" &>"/dev/null" || READLINK_EXEC="greadlink"
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! type -a "gmktemp" &>"/dev/null" || MKTEMP_EXEC="gmktemp"
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fi
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test_dir="$($READLINK_EXEC -zf $(dirname "${BASH_SOURCE[0]}"))"
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image_dir=$($READLINK_EXEC -zf ${test_dir}/..)
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scripts_url="file://${image_dir}/.s2i/bin"
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cid_file=$($MKTEMP_EXEC -u --suffix=.cid)
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# Since we built the candidate image locally, we don't want S2I to attempt to pull
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# it from Docker hub
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s2i_args="--pull-policy=never --loglevel=2"
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# Port the image exposes service to be tested
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test_port=8080
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image_exists() {
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docker inspect $1 &>/dev/null
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}
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container_exists() {
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image_exists $(cat $cid_file)
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}
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container_ip() {
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if [ ! -z "$DOCKER_HOST" ] && [[ "$OSTYPE" =~ 'darwin' ]]; then
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docker-machine ip
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else
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docker inspect --format="{{ .NetworkSettings.IPAddress }}" $(cat $cid_file)
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fi
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}
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container_port() {
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if [ ! -z "$DOCKER_HOST" ] && [[ "$OSTYPE" =~ 'darwin' ]]; then
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docker inspect --format="{{(index .NetworkSettings.Ports \"$test_port/tcp\" 0).HostPort}}" "$(cat "${cid_file}")"
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else
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echo $test_port
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fi
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}
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run_s2i_build() {
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s2i build --incremental=true ${s2i_args} file://${test_dir}/test-app ${IMAGE_NAME} ${IMAGE_NAME}-testapp
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}
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prepare() {
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if ! image_exists ${IMAGE_NAME}; then
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echo "ERROR: The image ${IMAGE_NAME} must exist before this script is executed."
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exit 1
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fi
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# s2i build requires the application is a valid 'Git' repository
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pushd ${test_dir}/test-app >/dev/null
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git init
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git config user.email "build@localhost" && git config user.name "builder"
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git add -A && git commit -m "Sample commit"
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popd >/dev/null
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run_s2i_build
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}
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run_test_application() {
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docker run --rm --cidfile=${cid_file} -p ${test_port} ${IMAGE_NAME}-testapp
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}
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cleanup() {
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if [ -f $cid_file ]; then
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if container_exists; then
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docker stop $(cat $cid_file)
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fi
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fi
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if image_exists ${IMAGE_NAME}-testapp; then
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docker rmi ${IMAGE_NAME}-testapp
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fi
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}
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check_result() {
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local result="$1"
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if [[ "$result" != "0" ]]; then
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echo "S2I image '${IMAGE_NAME}' test FAILED (exit code: ${result})"
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cleanup
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exit $result
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fi
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}
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wait_for_cid() {
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local max_attempts=10
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local sleep_time=1
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local attempt=1
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local result=1
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while [ $attempt -le $max_attempts ]; do
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[ -f $cid_file ] && break
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echo "Waiting for container to start..."
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attempt=$(( $attempt + 1 ))
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sleep $sleep_time
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done
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}
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test_usage() {
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echo "Testing 's2i usage'..."
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s2i usage ${s2i_args} ${IMAGE_NAME} &>/dev/null
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}
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test_connection() {
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echo "Testing HTTP connection (http://$(container_ip):$(container_port))"
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local max_attempts=10
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local sleep_time=1
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local attempt=1
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local result=1
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while [ $attempt -le $max_attempts ]; do
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echo "Sending GET request to http://$(container_ip):$(container_port)/"
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response_code=$(curl -s -w %{http_code} -o /dev/null http://$(container_ip):$(container_port)/)
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status=$?
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if [ $status -eq 0 ]; then
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if [ $response_code -eq 200 ]; then
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result=0
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fi
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break
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fi
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attempt=$(( $attempt + 1 ))
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sleep $sleep_time
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done
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return $result
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}
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# Build the application image twice to ensure the 'save-artifacts' and
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# 'restore-artifacts' scripts are working properly
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prepare
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run_s2i_build
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check_result $?
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# Verify the 'usage' script is working properly
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test_usage
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check_result $?
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# Verify that the HTTP connection can be established to test application container
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run_test_application &
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# Wait for the container to write its CID file
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wait_for_cid
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test_connection
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check_result $?
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cleanup
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@ -0,0 +1,11 @@
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<!doctype html>
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<html>
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<head>
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<title>Hello World!</title>
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</head>
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<body>
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<h1>Hello World!</h1>
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</body>
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</html>
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