added a "docker images" shortcut like "the old way"

Author: Sengorius

.env.template

@@ -36,5 +36,10 @@ export NETWORK_NAME=proxy-network
 # tell "DockerExec do ps" what columns to print out; separate with a pipe
 # possible values are: ID, Image, Command, CreatedAt, RunningFor, Ports,
 # State, Status, Size, Names, Labels, Mounts and Networks
-# see https://docs.docker.com/engine/reference/commandline/ps/#formatting
+# see https://docs.docker.com/reference/cli/docker/container/ls/#format
 export DOCKER_PS_COLUMNS="Image|Status|Ports|Names"
+
+# tell "DockerExec do images" what columns to print out; separate with a pipe
+# possible values are: ID, Repository, Tag, Digest, CreatedAt, CreatedSince, Size
+# see https://docs.docker.com/reference/cli/docker/image/ls/#format
+export DOCKER_IMAGES_COLUMNS="Repository|Tag|Size|CreatedSince"

DockerExec

@@ -121,6 +121,7 @@ if [[ "help" == "$ACTION" || "--help" == "$ACTION" || "-h" == "$ACTION" ]]; then
     echo
     echo -e " ${COLOR_GREEN}do${COLOR_WHITE}: Other tools"
     echo -e "    ${COLOR_BLUE}ps${COLOR_WHITE}                 - lists all containers like 'docker ps -a'"
+    echo -e "    ${COLOR_BLUE}images${COLOR_WHITE}             - lists all local images like 'docker image ls -a'"
     echo -e "    ${COLOR_BLUE}remove${COLOR_WHITE}             - does a 'docker rm' to all containers that have stopped running"
     echo -e "    ${COLOR_BLUE}cleanup${COLOR_WHITE}            - deletes all docker images, that have a <none> as tag name or image id"
     echo -e "    ${COLOR_BLUE}finish${COLOR_WHITE}             - stops and removes all current containers, like 'docker stop && docker rm'"
@@ -562,6 +563,14 @@ elif [[ "do" == "$ENVIRONMENT" ]]; then
 
         docker ps -a --format "$PS_FORMAT"
 
+    elif [[ "images" == "$ACTION" ]]; then
+        IMAGES_COLUMNS=${DOCKER_IMAGES_COLUMNS:-Repository|Tag|Size|CreatedSince}
+        IMAGES_COLUMNS=${IMAGES_COLUMNS//|/ }
+        IMAGES_COLUMNS_FORMATTED=$(join_by '}}\t{{.' $IMAGES_COLUMNS)
+        IMAGES_FORMAT="table {{.$IMAGES_COLUMNS_FORMATTED}}"
+
+        docker images --all --format "$IMAGES_FORMAT"
+
     else
         print_error "Unknown option '$ACTION'..." 1
         exit 1