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Diffstat (limited to 'docs/source/markdown/podman-run.1.md')
| -rw-r--r-- | docs/source/markdown/podman-run.1.md | 27 |
1 files changed, 11 insertions, 16 deletions
diff --git a/docs/source/markdown/podman-run.1.md b/docs/source/markdown/podman-run.1.md index 8f71c3706..e628a806a 100644 --- a/docs/source/markdown/podman-run.1.md +++ b/docs/source/markdown/podman-run.1.md @@ -404,16 +404,10 @@ on the host system. #### **--gidmap**=*container_gid*:*host_gid*:*amount* -Run the container in a new user namespace using the supplied mapping. This option conflicts with the **--userns** and **--subgidname** flags. -This option can be passed several times to map different ranges. If calling **podman run** as an unprivileged user, the user needs to have the right to use the mapping. See **subuid**(5). -The example maps gids **0-1999** in the container to the gids **30000-31999** on the host: **--gidmap=0:30000:2000**. - -**Important note:** The new user namespace mapping based on **--gidmap** is based on the initial mapping made in the _/etc/subgid_ file. -Assuming there is a _/etc/subgid_ mapping **groupname:100000:65536**, then **groupname** is initially mapped to a namespace starting with -gid **100000** for **65536** ids. From here the **--gidmap** mapping to the new namespace starts from **0** again, but is based on the initial mapping. -Meaning **groupname** is initially mapped to gid **100000** which is referenced as **0** in the following **--gidmap** mapping. In terms of the example -above: The group **groupname** is mapped to group **100000** of the initial namespace then the -**30000**st id of this namespace (which is gid 130000 in this namespace) is mapped to container namespace group id **0**. (groupname -> 100000 / 30000 -> 0) +Run the container in a new user namespace using the supplied GID mapping. This +option conflicts with the **--userns** and **--subgidname** options. This +option provides a way to map host GIDs to container GIDs in the same way as +__--uidmap__ maps host UIDs to container UIDs. For details see __--uidmap__. Note: the **--gidmap** flag cannot be called in conjunction with the **--pod** flag as a gidmap cannot be set on the container level when in a pod. @@ -905,13 +899,14 @@ When using this option, Podman will bind any exposed port to a random port on th within an ephemeral port range defined by */proc/sys/net/ipv4/ip_local_port_range*. To find the mapping between the host ports and the exposed ports, use **podman port**. -#### **--pull**=**always**|**missing**|**never** +#### **--pull**=**always**|**missing**|**never**|**newer** -Pull image before running. The default is **missing**. +Pull image policy. The default is **missing**. -- **missing**: attempt to pull the latest image from the registries listed in registries.conf if a local image does not exist.Raise an error if the image is not in any listed registry and is not present locally. -- **always**: Pull the image from the first registry it is found in as listed in registries.conf. Raise an error if not found in the registries, even if the image is present locally. -- **never**: do not pull the image from the registry, use only the local version. Raise an error if the image is not present locally. +- **always**: Always pull the image and throw an error if the pull fails. +- **missing**: Pull the image only if it could not be found in the local containers storage. Throw an error if no image could be found and the pull fails. +- **never**: Never pull the image but use the one from the local containers storage. Throw an error if no image could be found. +- **newer**: Pull if the image on the registry is newer than the one in the local containers storage. An image is considered to be newer when the digests are different. Comparing the time stamps is prone to errors. Pull errors are suppressed if a local image was found. #### **--quiet**, **-q** @@ -1187,7 +1182,7 @@ Remote connections use local containers.conf for defaults #### **--uidmap**=*container_uid*:*from_uid*:*amount* -Run the container in a new user namespace using the supplied mapping. This +Run the container in a new user namespace using the supplied UID mapping. This option conflicts with the **--userns** and **--subuidname** options. This option provides a way to map host UIDs to container UIDs. It can be passed several times to map different ranges. |