According to the official tutorial, it says \"Go to https://download.docker.com/linux/ubuntu/dists/, choose your Ubuntu version, browse to pool/stable/ and choose amd64, armhf,
https://docs.docker.com/install/#supported-platforms lists the supported architectures and 32-bit x86 Linux isn't one of them.
The desktop Docker for Mac and Docker for Windows applications only run on 64-bit x86; the Linux system component runs on 64-bit x86 (but not 32-bit), 64-bit ARM, and IBM Power (ppc64le) and Z (s390x) platforms. Prebuilt distribution packages are only available one some of those architectures, though all of CentOS, Debian, Fedora, and Ubuntu are available for 64-bit x86 and Ubuntu packages are available for all supported architectures.