Which Docker Engine versions are still maintained?
As of 19 October 2026 the Moby project, which Docker Engine builds on, lists two maintained branches: 29.x, the current line, and 25.0, kept until 4 December 2026. It lists 28.x, 27.x, 26.x and 24.0 as unmaintained, and calls the status informational. AceMQ supports Docker Engine on Linux, covering the current release and the five end-of-life release lines before it, and plans the move off unmaintained lines.
Who answers when a Docker deploy is blocked in production, and how fast?
A named AceMQ senior engineer joins a live bridge within 15 minutes, 24/7, when containers crash-loop, a registry outage stops every rollout or a node runs out of disk. Lower severities get a first response within 1 hour, 4 hours or the next business day. The engineer who takes the call stays on the case, and every P1 ends in a written root-cause analysis.
How does an AceMQ Docker engagement start?
An AceMQ Docker engagement starts with a free consultation with a senior engineer, booked in our reply within 1 hour. An image and build assessment of 1 to 2 weeks follows, covering Dockerfiles, base images, the build pipeline and the registry. Written findings arrive within a week, and no image or pipeline changes before you have read them.
Can an AceMQ engineer work alongside our DevOps team?
Yes. A named senior engineer from AceMQ's team of 11+ works with your engineers, reworking Dockerfiles, multi-stage builds and base images one service at a time so each change can be reverted on its own. You keep the base-image update and rebuild runbooks when the work is done.
Why is our container killed with exit code 137 when the app has memory free?
Because the runtime inside the container sizes itself from host memory rather than the container's cgroup limit. A JVM without container awareness, or Node with a heap ceiling above the limit, grows past it and the kernel kills the process before it can log anything. AceMQ sets heap relative to the limit, with headroom for off-heap memory.
Why do different hosts run different builds of the same image tag?
Because a tag such as latest is mutable. Each host runs whatever it last pulled, so a rebuilt tag reaches a host only when its container restarts. The fix is to deploy by image digest, pin base images, keep earlier digests for rollback, and rebuild on a schedule so the build in production is one you tested.
How do we stop registry rate limits from blocking our deploys?
Anonymous pulls from a public registry are limited per source IP, so a NAT-ed cluster or CI fleet shares one budget and exhausts it during a large rollout. AceMQ sets up authenticated pulls and a pull-through cache or internal mirror, and pins the base images you depend on, so a throttle or outage upstream cannot block a deploy.
Should we stay on Docker Compose or move to Kubernetes?
Stay on Compose for a single host with a maintenance window; move when you need multi-node scheduling, rolling updates with automatic rollback, autoscaling or self-healing across host failures. The mapping is not one to one, so AceMQ defines storage, probes and limits explicitly and cuts over in stages with a parallel run.
Can we work with AceMQ on Docker without a long contract?
Yes. AceMQ works on Docker in two ways: ad hoc engagements for a defined piece of work, such as a health check, an upgrade or an incident, or an annual partner engagement that covers 24/7 support, proactive reviews and named engineers. Many teams start ad hoc and move to an annual partnership once the first engagement is done.
How much does AceMQ Docker support or consulting cost?
Every AceMQ proposal is tailored to your requirements: your Docker environment, the SLA you need, the hours of cover and the scope of work. Most contracts run $24,000–72,000 a year, depending on the SLA, the scope and how Docker is deployed, with aggressive discounts when several technologies share one contract. Request a quote and AceMQ replies within 1 hour.