diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..485dee6
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+.idea
diff --git a/docs/README.md b/docs/README.md
index 3aed286..f19c1e4 100644
--- a/docs/README.md
+++ b/docs/README.md
@@ -4,7 +4,7 @@
 
 ---
 
-Dotenv-linter can [check](/usage/check) / [fix](/usage/fix) / [compare](/usage/compare) `.env` files for problems that may cause the application to malfunction.
+Dotenv-linter can [check](/usage/check) / [fix](/usage/fix) / [compare](/usage/diff) `.env` files for problems that may cause the application to malfunction.
 
 **Available checks**:
 <p>
diff --git a/docs/_sidebar.md b/docs/_sidebar.md
index 2b78f2e..0501111 100644
--- a/docs/_sidebar.md
+++ b/docs/_sidebar.md
@@ -2,7 +2,8 @@
 * [👨‍💻 Installation](installation.md)
 
 * 🎉 What's new?
-    * [v3.3.1 (latest)](whats_new/v331.md)
+    * [v4.0.0 (latest)](whats_new/v400.md)
+    * [v3.3.1](whats_new/v331.md)
     * [v3.3.0](whats_new/v330.md)
     * [v3.2.0](whats_new/v320.md)
     * [v3.1.1](whats_new/v311.md)
@@ -13,9 +14,8 @@
 
 * 🚀 Usage
     * [✅ Check](usage/check.md)
-    * [🤲 Compare](usage/compare.md)
+    * [🤲 Diff](usage/diff.md)
     * [🛠 Fix](usage/fix.md)
-    * [📄 List](usage/list.md)
 
 * ✅ Checks
     * [Duplicated key](checks/duplicated_key.md)
@@ -26,6 +26,7 @@
     * [Leading character](checks/leading_character.md)
     * [Lowercase key](checks/lowercase_key.md)
     * [Quote character](checks/quote_character.md)
+    * [Schema violation](checks/schema_violation.md)
     * [Space character](checks/space_character.md)
     * [Substitution key](checks/substitution_key.md)
     * [Trailing whitespace](checks/trailing_whitespace.md)
diff --git a/docs/checks/schema_violation.md b/docs/checks/schema_violation.md
new file mode 100644
index 0000000..1333ed7
--- /dev/null
+++ b/docs/checks/schema_violation.md
@@ -0,0 +1 @@
+TODO
diff --git a/docs/usage/check.md b/docs/usage/check.md
index daf1aa4..4ec1fad 100644
--- a/docs/usage/check.md
+++ b/docs/usage/check.md
@@ -1,4 +1,4 @@
-# ✅ Check
+# ✅ Check TODO
 
 By default, `dotenv-linter` checks all `.env` files in the current directory:
 
diff --git a/docs/usage/compare.md b/docs/usage/diff.md
similarity index 96%
rename from docs/usage/compare.md
rename to docs/usage/diff.md
index ede2915..f9aeecb 100644
--- a/docs/usage/compare.md
+++ b/docs/usage/diff.md
@@ -1,4 +1,4 @@
-# 🤲 Compare
+# 🤲 Compare TODO
 
 `dotenv-linter` can compare `.env` files with each other and output the difference between them with the `compare` command (or its short version `c`):
 
diff --git a/docs/usage/fix.md b/docs/usage/fix.md
index d7b842c..3a53092 100644
--- a/docs/usage/fix.md
+++ b/docs/usage/fix.md
@@ -1,9 +1,9 @@
-# 🛠 Fix
+# 🛠 Fix TODO
 
 `dotenv-linter` can also fix the found warnings with the `fix` command (or its short version `f`):
 
 ```bash
-$ dotenv-linter fix
+$ dotenv-linter fix .
 Fixing .env
 Original file was backed up to: ".env_1601378896"
 
@@ -18,7 +18,7 @@ All warnings are fixed. Total: 2
 By default, `fix` creates backups of files. If you want to disable the backup function, use the argument `--no-backup`:
 
 ```bash
-$ dotenv-linter fix --no-backup
+$ dotenv-linter fix . --no-backup
 Fixing .env
 .env:2 DuplicatedKey: The BAR key is duplicated
 .env:3 LowercaseKey: The foo key should be in uppercase
@@ -31,7 +31,7 @@ All warnings are fixed. Total: 2
 If you want to run `fix` without modifying any files on disk, use the `--dry-run` flag.
 
 ```bash
-$ dotenv-linter fix --dry-run
+$ dotenv-linter fix . --dry-run
 Fixing .env
 Dry run - not changing any files on disk.
 
@@ -46,7 +46,7 @@ FOO=foo_example
 All warnings are fixed. Total: 2
 ```
 
-#### Addition arguments
+#### Addition arguments TODO
 
 In addition, the `fix` command supports the following list of arguments:
 * [--exclude](/usage/check?id=exclude-files)
diff --git a/docs/usage/list.md b/docs/usage/list.md
deleted file mode 100644
index d0faee6..0000000
--- a/docs/usage/list.md
+++ /dev/null
@@ -1,19 +0,0 @@
-# 📄 List
-
-If you need to view all available checks, you can use the `list` command (or its short version `l`):
-
-```bash
-$ dotenv-linter list
-DuplicatedKey
-EndingBlankLine
-ExtraBlankLine
-IncorrectDelimiter
-KeyWithoutValue
-LeadingCharacter
-LowercaseKey
-QuoteCharacter
-SpaceCharacter
-SubstitutionKey
-TrailingWhitespace
-UnorderedKey
-```
diff --git a/docs/whats_new/v400.md b/docs/whats_new/v400.md
new file mode 100644
index 0000000..ebb8210
--- /dev/null
+++ b/docs/whats_new/v400.md
@@ -0,0 +1,22 @@
+# What's new in v3.3.1? TODO
+
+Here's an overview of the key changes included in this release.
+
+### 1. Fix docker image for `arm64`
+
+PR: [#757](https://github.com/dotenv-linter/dotenv-linter/pull/757) ([@harryzcy](https://github.com/harryzcy))
+
+### 2. Add `--dry-run` option to the "fix" subcommand
+
+PR: [#772](https://github.com/dotenv-linter/dotenv-linter/pull/772) ([@Dev380](https://github.com/Dev380))
+
+These are all the key changes that are included in the new [v3.3.1](https://github.com/dotenv-linter/dotenv-linter/releases/tag/v3.2.0) release.<br/>
+Thanks to everyone who contributed 🙏
+
+---
+
+How you can support the project 😉
+
+* Star on [GitHub](https://github.com/dotenv-linter/dotenv-linter) ⭐️
+* Become a sponsor on [GitHub Sponsors](https://github.com/sponsors/dotenv-linter) or [OpenCollective](https://opencollective.com/dotenv-linter) ❤️
+* Contribute to the [dotenv-linter](https://github.com/dotenv-linter/dotenv-linter/blob/master/CONTRIBUTING.md) ⚙️