Certain operations like postCreateCommand run non-interactive, non-login shells. Unfortunately, nvm is really particular that it needs to be "sourced" before it is used, which can only happen automatically with interactive and/or login shells. Fortunately, this is easy to work around:
Just can source the nvm startup script before using it:
"postCreateCommand": ". ${NVM_DIR}/nvm.sh && nvm install --lts"Note that typically the default shell in these cases is sh not bash, so use . ${NVM_DIR}/nvm.sh instead of source ${NVM_DIR}/nvm.sh.
Alternatively, you can start up an interactive shell which will in turn source nvm:
"postCreateCommand": "bash -i -c 'nvm install --lts'"Debian/Ubuntu, RedHat Enterprise Linux, Fedora, Alma, and Rocky Linux distributions with the apt, yum, dnf, or microdnf package manager installed.
Note: RedHat 7 Family (RedHat, CentOS, etc.) must use Node versions less than 18 due to its system libraries and long-term support (LTS) policies.
bash is required to execute the install.sh script.
If you need to use a private mirror for downloading Node.js binaries (e.g. in an air-gapped environment), you can use the nvmNodeJsOrgMirror option:
"features": {
"ghcr.io/devcontainers/features/node:1": {
"nvmNodeJsOrgMirror": "https://my-private-registry.com/node-dist"
}
}