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| author | Qi Wang <qiwan@redhat.com> | 2019-07-29 16:44:09 -0400 |
|---|---|---|
| committer | Qi Wang <qiwan@redhat.com> | 2019-07-30 12:02:18 -0400 |
| commit | 2da86bdc3a626f3aebaadbf28c5cc73f80995a78 (patch) | |
| tree | f3a2b7b54fd52f3649d07f5b7aabddc0ae2f3780 /docs/podman-create.1.md | |
| parent | c3c45f3ba5c2782be9658a33f8632467a06c6422 (diff) | |
| download | podman-2da86bdc3a626f3aebaadbf28c5cc73f80995a78.tar.gz podman-2da86bdc3a626f3aebaadbf28c5cc73f80995a78.tar.bz2 podman-2da86bdc3a626f3aebaadbf28c5cc73f80995a78.zip | |
Set -env variables as appropriate
close #3648
podman create and podman run do not set --env variable if the environment is not present with a value
Signed-off-by: Qi Wang <qiwan@redhat.com>
Diffstat (limited to 'docs/podman-create.1.md')
| -rw-r--r-- | docs/podman-create.1.md | 17 |
1 files changed, 15 insertions, 2 deletions
diff --git a/docs/podman-create.1.md b/docs/podman-create.1.md index d796c2586..50fca3541 100644 --- a/docs/podman-create.1.md +++ b/docs/podman-create.1.md @@ -253,9 +253,9 @@ You need to specify multi option commands in the form of a json string. Set environment variables -This option allows you to specify arbitrary environment variables that are available for the process that will be launched inside of the container. If you specify a environment variable without a value, podman will check the host environment for a value or set the environment to "". If you specify a environment variable ending in --*--, podman will search the host environment for variables starting with the prefix and add them to the container. If you want to add an environment variable with a ***** following it, then you need to set a value. +This option allows arbitrary environment variables that are available for the process to be launched inside of the container. If an environment variable is specified without a value, Podman will check the host environment for a value and set the variable only if it is set on the host. If an environment variable ending in __*__ is specified, Podman will search the host environment for variables starting with the prefix and will add those variables to the container. If an environment variable with a trailing ***** is specified, then a value must be supplied. -See **Environment** note below for precedence. +See [**Environment**](#environment) note below for precedence and examples. **--env-host**=*true|false* @@ -933,6 +933,19 @@ Precedence Order: **--env** : Any environment variables specified will override previous settings. +Create containers and set the environment ending with a __*__ and a ***** + +``` +$ export ENV1=a +$ podman create --name ctr --env ENV* alpine printenv ENV1 +$ podman start --attach ctr +a + +$ podman create --name ctr --env ENV*****=b alpine printenv ENV***** +$ podman start --attach ctr +b +``` + ## FILES **/etc/subuid** |