A PowerShell format file to be used with my Get-DockerContainer function.

mydockercontainer.format.ps1xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
  <ViewDefinitions>
    <View>
      <!--Created 03/27/2019 17:01:10 by BOVINE320\Jeff-->
      <Name>default</Name>
      <ViewSelectedBy>
        <TypeName>Get-DockerContainer.myDockerContainer</TypeName>
      </ViewSelectedBy>
      <GroupBy>
        <ScriptBlock>@"
$($_.ID)
   Image Tag   : $($_.image)
"@</ScriptBlock>
        <Label>Container ID</Label>
      </GroupBy>
      <TableControl>
        <TableHeaders>
          <TableColumnHeader>
            <Label>Name</Label>
            <Width>7</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>Created</Label>
            <Width>22</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>State</Label>
            <Width>8</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>IsRunning</Label>
            <Width>10</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>Started</Label>
            <Width>21</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>Finished</Label>
            <Width>21</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>Runtime</Label>
            <Width>20</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
        </TableHeaders>
        <TableRowEntries>
          <TableRowEntry>
            <TableColumnItems>
              <TableColumnItem>
                <PropertyName>Name</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>Created</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>State</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>IsRunning</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>Started</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>Finished</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>Runtime</PropertyName>
              </TableColumnItem>
            </TableColumnItems>
          </TableRowEntry>
        </TableRowEntries>
      </TableControl>
    </View>
    <View>
      <!--Created 04/01/2019 13:09:54 by BOVINE320\Jeff-->
      <Name>stats</Name>
      <ViewSelectedBy>
        <TypeName>Get-DockerContainer.myDockerContainer</TypeName>
      </ViewSelectedBy>
      <TableControl>
        <TableHeaders>
          <TableColumnHeader>
            <Label>Name</Label>
            <Width>7</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>State</Label>
            <Width>10</Width>
            <Alignment>left</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>Created</Label>
            <Width>23</Width>
            <Alignment>right</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>Age</Label>
            <Width>23</Width>
            <Alignment>right</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>Runtime</Label>
            <Width>19</Width>
            <Alignment>right</Alignment>
          </TableColumnHeader>
          <TableColumnHeader>
            <Label>Size</Label>
            <Width>9</Width>
            <Alignment>right</Alignment>
          </TableColumnHeader>
        </TableHeaders>
        <TableRowEntries>
          <TableRowEntry>
            <TableColumnItems>
              <TableColumnItem>
                <PropertyName>Name</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>State</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>Created</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <Scriptblock>(Get-Date) - $_.Created</Scriptblock>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>Runtime</PropertyName>
              </TableColumnItem>
              <TableColumnItem>
                <PropertyName>Size</PropertyName>
              </TableColumnItem>
            </TableColumnItems>
          </TableRowEntry>
        </TableRowEntries>
      </TableControl>
    </View>
  </ViewDefinitions>
</Configuration>

Use this file with the function defined at https://gist.github.com/jdhitsolutions/a55db2737d30fcb57d4d8c15d47a9cda