Nothing about Docker on Synology confuses more people than this: the package simply does not exist for some models. This guide sorts the Synology range into can, can-with-limits, and cannot — and shows you the two-minute check that settles it for your exact NAS.
Two NAS boxes can look identical on a shelf, run the same DSM, and still differ completely here — one shows Container Manager in its Package Center and the other never will. The difference is Synology's applied models list: the company decides, model by model, which machines are offered the Docker engine. Marketing words like powerful or home do not decide it. The list decides it. Here is how the range actually splits, and how to check yours without guessing.
Every Plus series model — the ones with a + in the name, like DS220+, DS423+, DS920+ or the newer DS925+ — supports Container Manager. These models also tend to have the two things containers quietly need: a stronger CPU and, on many of them, expandable RAM.
If you are buying a Synology NAS mainly to run containers, the Plus series is the honest recommendation. You are not paying for the badge; you are paying for the package list, the CPU headroom and the memory ceiling.
Synology surprised many people by listing several non-Plus, ARM-based models for Container Manager — the DS124, DS223 and DS423, and the DS420j from DSM 7.2. They genuinely run the package.
The warning is about weight, not permission. These models ship with small, fixed amounts of RAM — commonly 1 or 2 GB, not expandable. One or two light containers (a download tool, a small dashboard) run fine. A stack of five apps will not. Treat support on these models as yes, for light duty.
Most other j-series models, many older play models and the smallest value units are not on the applied models list. For them, Package Center does not show an error or an explanation. The package is simply absent, as if it never existed — which is why so many owners go hunting through settings for a switch that is not there.
Side-loading the package from another model is a popular forum trick. Be honest about what it is: unsupported, fragile across DSM updates, and the first thing to break when something else goes wrong. This guide does not recommend it for a NAS that holds data you care about.
Do not trust any list — including this page — over the check on your own machine.
Your files do not care where the container runs. The NAS can stay the storage while something else does the computing.
The full Docker on Synology NAS installation, shown live on a real NAS from package install to a running container.
▶️ Watch Full VideoYes. Synology lists the DS223 for Container Manager, so it can run Docker containers. The honest limit is memory: it has a small fixed amount of RAM that cannot be expanded, so it suits one or two light containers rather than a large stack of apps.
People do force the package onto unsupported models using files taken from supported ones, but it is not supported by Synology, it can break on any DSM update, and problems it causes are yours alone. On a NAS holding data you care about, the honest answer is to run containers on a different device instead.
Because support follows Synology's applied models list, not price or age. Some inexpensive recent models were added to the list, while some older or differently positioned models never were. The only check that settles it is Package Center on your own NAS, or the applied models list for Container Manager on Synology's website.