feat: Listing versions with <command>:?

README.md

@@ -152,6 +152,27 @@ dockerized npm install                # install packages.json
 
 ## Switching command versions 
 
+**Ad-hoc**
+
+Add `:<version>` to the end of the command to override the version.
+
+```shell
+dockerized node:15
+```
+
+
+**Listing versions**
+
+To see which versions are available, run:
+
+```shell
+dockerized node:?
+# or
+dockerized node:
+```
+
+**Environment Variables**
+
 Each command has a `<COMMAND>_VERSION` environment variable which you can override.
 
 - `python`: `PYTHON_VERSION`
@@ -188,13 +209,6 @@ This allows you to "lock" your tools to specific versions for your project.
 - Create a `dockerized.env` file in your project directory.
 - All commands executed within this directory will use the settings specified in this file.
 
-**Ad-hoc**
-
-Add `:<version>` to the end of the command to override the version.
-
-```shell
-dockerized node:15
-```
 
 **Ad-hoc (Unix)**
 
@@ -213,12 +227,6 @@ dockerized node:15
     dockerized node
     ```
 
-**Ad-hoc (Windows Powershell)**
-
-It's currently not known how to specify the version of a command in a Powershell script through environment variables.
-
-As an alternative, you can create a `dockerized.env` file in the current directory.
-
 ## Localhost
 
 Dockerized applications run within an isolated network. To access services running on your machine, you need to use `host.docker.internal` instead of `localhost`. 

go.mod

@@ -15,6 +15,10 @@ replace (
 require (
 	github.com/compose-spec/compose-go v1.1.0
 	github.com/docker/cli v20.10.12+incompatible
+	github.com/docker/distribution v2.8.1+incompatible
+	github.com/docker/hub-tool v0.4.4
+	github.com/fatih/color v1.13.0
+	github.com/hashicorp/go-version v1.3.0
 	github.com/joho/godotenv v1.3.0
 )
 
@@ -33,16 +37,14 @@ require (
 	github.com/davecgh/go-spew v1.1.1 // indirect
 	github.com/distribution/distribution/v3 v3.0.0-20210316161203-a01c71e2477e // indirect
 	github.com/docker/buildx v0.7.1 // indirect
-	github.com/docker/distribution v2.8.1+incompatible // indirect
 	github.com/docker/docker v20.10.7+incompatible // indirect
 	github.com/docker/docker-credential-helpers v0.6.4 // indirect
 	github.com/docker/go v1.5.1-1.0.20160303222718-d30aec9fd63c // indirect
 	github.com/docker/go-connections v0.4.0 // indirect
 	github.com/docker/go-metrics v0.0.1 // indirect
 	github.com/docker/go-units v0.4.0 // indirect
-	github.com/fatih/color v1.13.0 // indirect
 	github.com/felixge/httpsnoop v1.0.2 // indirect
-	github.com/fvbommel/sortorder v1.0.1 // indirect
+	github.com/fvbommel/sortorder v1.0.2 // indirect
 	github.com/go-logr/logr v1.2.2 // indirect
 	github.com/go-logr/stdr v1.2.2 // indirect
 	github.com/gofrs/flock v0.8.0 // indirect
@@ -53,12 +55,12 @@ require (
 	github.com/google/go-cmp v0.5.6 // indirect
 	github.com/google/gofuzz v1.2.0 // indirect
 	github.com/google/shlex v0.0.0-20191202100458-e7afc7fbc510 // indirect
+	github.com/google/uuid v1.2.0 // indirect
 	github.com/gorilla/mux v1.8.0 // indirect
 	github.com/grpc-ecosystem/go-grpc-middleware v1.3.0 // indirect
 	github.com/grpc-ecosystem/grpc-gateway v1.16.0 // indirect
 	github.com/hashicorp/errwrap v1.1.0 // indirect
 	github.com/hashicorp/go-multierror v1.1.1 // indirect
-	github.com/hashicorp/go-version v1.3.0 // indirect
 	github.com/imdario/mergo v0.3.12 // indirect
 	github.com/inconshreveable/mousetrap v1.0.0 // indirect
 	github.com/json-iterator/go v1.1.12 // indirect
@@ -68,7 +70,7 @@ require (
 	github.com/mattn/go-isatty v0.0.14 // indirect
 	github.com/mattn/go-shellwords v1.0.12 // indirect
 	github.com/matttproud/golang_protobuf_extensions v1.0.2-0.20181231171920-c182affec369 // indirect
-	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
+	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d // indirect
 	github.com/miekg/pkcs11 v1.0.3 // indirect
 	github.com/mitchellh/mapstructure v1.4.3 // indirect
 	github.com/moby/buildkit v0.9.1-0.20211019185819-8778943ac3da // indirect