Building container images
This page outlines the process of building container images on the builder VM and sending them to the VM actually running an RDMS instance without using a container registry.
As builder@builder.rd.ruhr-uni-bochum.de:
cd "${HOME}/rdms"
# Fetch latest changes from Gitlab server
git fetch
# Checkout git branch from which to build our image
git checkout some-feature-branch
# Verify that there are no changes that have not been committed to the git branch we just checked out
git status
# Get latest changes from git repo
git pull
# Note: Do *not* apply any local changes that are not committed/documented in the git branch you checked out!
# Only generate the DOCKER_IMAGE_TAG variable once *after* applying all your changes, then copy/reuse the generated value when issuing commands later on
export DOCKER_IMAGE_TAG="$(git describe --long --tags)_$(date --utc --iso-8601=seconds | sed 's|\+00:00$|UTC|g;s|:|-|g')"
# Build the actual container images
docker compose -f docker-compose.yml build --pull --no-cache
# Show the generated DOCKER_IMAGE_TAG for copying/reusing on other machines
echo "DOCKER_IMAGE_TAG: ${DOCKER_IMAGE_TAG}"
# This should print something like the following line:
# DOCKER_IMAGE_TAG v1.0-beta1-1-g6113168_2023-11-06T15-03-15UTC
# Tag the new "latest" images on the builder VM with our generated DOCKER_IMAGE_TAG
docker image tag "rdms-app:latest" "rdms-app:${DOCKER_IMAGE_TAG}"
docker image tag "rdms-web:latest" "rdms-web:${DOCKER_IMAGE_TAG}"
docker image tag "rdms-workers:latest" "rdms-workers:${DOCKER_IMAGE_TAG}" As normal user on your own laptop / office workstation:
# This should be set to the same value/string that was printed on the builder VM
export DOCKER_IMAGE_TAG="v1.0-beta1-1-g6113168_2023-11-06T15-03-15UTC"
# Copy the new tagged images from the builder VM over to the RDMS VM
ssh builder@builder.rd.rub.de "docker image save rdms-app:${DOCKER_IMAGE_TAG} rdms-web:${DOCKER_IMAGE_TAG} rdms-workers:${DOCKER_IMAGE_TAG}" | dd status=progress bs=1M | ssh rdms@rdms-demo.rd.rub.de "docker load"As rdms@rdms-demo.rd.ruhr-uni-bochum.de:
cd "${HOME}/rdms"
# Stop the running docker containers (usually with the old "latest" images
docker compose -f docker-compose.yml down
# tag new images as "latest"
# This should be set to the same value/string that was printed on the builder VM
export DOCKER_IMAGE_TAG="v1.0-beta1-1-g6113168_2023-11-06T15-03-15UTC"
docker image tag "rdms-app:${DOCKER_IMAGE_TAG}" "rdms-app:latest"
docker image tag "rdms-web:${DOCKER_IMAGE_TAG}" "rdms-web:latest"
docker image tag "rdms-workers:${DOCKER_IMAGE_TAG}" "rdms-workers:latest"
# Start docker containers again with new "latest" images
docker compose -f docker-compose.yml up -d