diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index efec34e..4b9c449 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -89,9 +89,8 @@ jobs:
         uses: ./
         env:
           GIT_AUTH_TOKEN: ${{ github.token }}
-          GIT_REF: ${{ github.ref }}
         with:
-          context: ${{ github.repositoryUrl }}
+          context: "${{ github.repositoryUrl }}#${{ github.ref }}"
           file: ./test/Dockerfile
           builder: ${{ steps.buildx.outputs.name }}
           platforms: linux/amd64,linux/arm64
diff --git a/README.md b/README.md
index bf3d92b..b33062e 100644
--- a/README.md
+++ b/README.md
@@ -158,9 +158,8 @@ jobs:
         uses: ./
         env:
           GIT_AUTH_TOKEN: ${{ github.token }}
-          GIT_REF: ${{ github.ref }}
         with:
-          context: ${{ github.repositoryUrl }}
+          context: "${{ github.repositoryUrl }}#${{ github.ref }}"
           builder: ${{ steps.buildx.outputs.name }}
           platforms: linux/amd64,linux/arm64,linux/386
           push: true
@@ -178,7 +177,7 @@ Following inputs can be used as `step.with` keys
 | Name                | Type    | Default                           | Description                        |
 |---------------------|---------|-----------------------------------|------------------------------------|
 | `builder`           | String  |                                   | Builder instance (see [setup-buildx](https://github.com/docker/setup-buildx-action) action) |
-| `context`           | String  | `.`                               | Build's context is the set of files located in the specified `PATH` or `URL` |
+| `context`           | String  | `.`                               | Build's context is the set of files located in the specified [`PATH` or `URL`](https://docs.docker.com/engine/reference/commandline/build/) |
 | `file`              | String  | `./Dockerfile`                    | Path to the Dockerfile. |
 | `build-args`        | List    |                                   | List of build-time variables |
 | `labels`            | List    |                                   | List of metadata for an image |
@@ -223,7 +222,6 @@ Following environment variables can be used as `step.env` keys
 |--------------------------|---------------------------------------|
 | `GIT_AUTH_HEADER`**¹**   | Raw authorization header to authenticate against git repository |
 | `GIT_AUTH_TOKEN`**¹**    | `x-access-token` basic auth to authenticate against git repository |
-| `GIT_REF`**¹**           | Git refrerence to use against git repository |
 
 > **¹** Only used if `input.context` is a valid git uri.
 
diff --git a/package.json b/package.json
index e382119..c2abbb0 100644
--- a/package.json
+++ b/package.json
@@ -28,11 +28,9 @@
   "dependencies": {
     "@actions/cache": "^1.0.2",
     "@actions/core": "^1.2.4",
-    "@actions/exec": "^1.0.4",
-    "git-url-parse": "^11.1.3"
+    "@actions/exec": "^1.0.4"
   },
   "devDependencies": {
-    "@types/git-url-parse": "^9.0.0",
     "@types/jest": "^26.0.3",
     "@types/node": "^14.0.14",
     "@zeit/ncc": "^0.22.3",
diff --git a/src/context.ts b/src/context.ts
index f4cf7c5..52c0d74 100644
--- a/src/context.ts
+++ b/src/context.ts
@@ -1,4 +1,3 @@
-import gitUrlParse from 'git-url-parse';
 import * as core from '@actions/core';
 
 export interface Inputs {
@@ -26,7 +25,7 @@ export interface Inputs {
 
 export async function getInputs(): Promise<Inputs> {
   return {
-    context: await getBuildContext(),
+    context: core.getInput('context') || '.',
     file: core.getInput('file') || './Dockerfile',
     buildArgs: await getInputList('build-args'),
     labels: await getInputList('labels'),
@@ -68,23 +67,6 @@ export async function getArgs(inputs: Inputs): Promise<Array<string>> {
   return args;
 }
 
-async function getBuildContext(): Promise<string> {
-  let context: string = core.getInput('context');
-  if (!context) {
-    return '.';
-  }
-  try {
-    const gitUrl = gitUrlParse(context);
-    const gitRef = process.env['GIT_REF'] || '';
-    if (gitRef) {
-      return `${gitUrl.toString()}#${gitRef}`;
-    }
-    return gitUrl.toString();
-  } catch {
-    return context;
-  }
-}
-
 async function getCommonArgs(inputs: Inputs): Promise<Array<string>> {
   let args: Array<string> = [];
   if (inputs.noCache) {
diff --git a/yarn.lock b/yarn.lock
index f8298d2..52ede63 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -712,11 +712,6 @@
   resolved "https://registry.yarnpkg.com/@types/color-name/-/color-name-1.1.1.tgz#1c1261bbeaa10a8055bbc5d8ab84b7b2afc846a0"
   integrity sha512-rr+OQyAjxze7GgWrSaJwydHStIhHq2lvY3BOC2Mj7KnzI7XK0Uw1TOOdI9lDoajEbSWLiYgoo4f1R51erQfhPQ==
 
-"@types/git-url-parse@^9.0.0":
-  version "9.0.0"
-  resolved "https://registry.yarnpkg.com/@types/git-url-parse/-/git-url-parse-9.0.0.tgz#aac1315a44fa4ed5a52c3820f6c3c2fb79cbd12d"
-  integrity sha512-kA2RxBT/r/ZuDDKwMl+vFWn1Z0lfm1/Ik6Qb91wnSzyzCDa/fkM8gIOq6ruB7xfr37n6Mj5dyivileUVKsidlg==
-
 "@types/graceful-fs@^4.1.2":
   version "4.1.3"
   resolved "https://registry.yarnpkg.com/@types/graceful-fs/-/graceful-fs-4.1.3.tgz#039af35fe26bec35003e8d86d2ee9c586354348f"
@@ -1769,21 +1764,6 @@ getpass@^0.1.1:
   dependencies:
     assert-plus "^1.0.0"
 
-git-up@^4.0.0:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/git-up/-/git-up-4.0.2.tgz#10c3d731051b366dc19d3df454bfca3f77913a7c"
-  integrity sha512-kbuvus1dWQB2sSW4cbfTeGpCMd8ge9jx9RKnhXhuJ7tnvT+NIrTVfYZxjtflZddQYcmdOTlkAcjmx7bor+15AQ==
-  dependencies:
-    is-ssh "^1.3.0"
-    parse-url "^5.0.0"
-
-git-url-parse@^11.1.3:
-  version "11.1.3"
-  resolved "https://registry.yarnpkg.com/git-url-parse/-/git-url-parse-11.1.3.tgz#03625b6fc09905e9ad1da7bb2b84be1bf9123143"
-  integrity sha512-GPsfwticcu52WQ+eHp0IYkAyaOASgYdtsQDIt4rUp6GbiNt1P9ddrh3O0kQB0eD4UJZszVqNT3+9Zwcg40fywA==
-  dependencies:
-    git-up "^4.0.0"
-
 glob@^7.1.1, glob@^7.1.2, glob@^7.1.3, glob@^7.1.4:
   version "7.1.6"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.6.tgz#141f33b81a7c2492e125594307480c46679278a6"
@@ -2048,13 +2028,6 @@ is-potential-custom-element-name@^1.0.0:
   resolved "https://registry.yarnpkg.com/is-potential-custom-element-name/-/is-potential-custom-element-name-1.0.0.tgz#0c52e54bcca391bb2c494b21e8626d7336c6e397"
   integrity sha1-DFLlS8yjkbssSUsh6GJtczbG45c=
 
-is-ssh@^1.3.0:
-  version "1.3.2"
-  resolved "https://registry.yarnpkg.com/is-ssh/-/is-ssh-1.3.2.tgz#a4b82ab63d73976fd8263cceee27f99a88bdae2b"
-  integrity sha512-elEw0/0c2UscLrNG+OAorbP539E3rhliKPg+hDMWN9VwrDXfYK+4PBEykDPfxlYYtQvl84TascnQyobfQLHEhQ==
-  dependencies:
-    protocols "^1.1.0"
-
 is-stream@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/is-stream/-/is-stream-1.1.0.tgz#12d4a3dd4e68e0b79ceb8dbc84173ae80d91ca44"
@@ -2921,11 +2894,6 @@ normalize-path@^3.0.0:
   resolved "https://registry.yarnpkg.com/normalize-path/-/normalize-path-3.0.0.tgz#0dcd69ff23a1c9b11fd0978316644a0388216a65"
   integrity sha512-6eZs5Ls3WtCisHWp9S2GUy8dqkpGi4BVSz3GaqiE6ezub0512ESztXUwUB6C6IKbQkY2Pnb/mD4WYojCRwcwLA==
 
-normalize-url@^3.3.0:
-  version "3.3.0"
-  resolved "https://registry.yarnpkg.com/normalize-url/-/normalize-url-3.3.0.tgz#b2e1c4dc4f7c6d57743df733a4f5978d18650559"
-  integrity sha512-U+JJi7duF1o+u2pynbp2zXDW2/PADgC30f0GsHZtRh+HOcXHnw137TrNlyxxRvWW5fjKd3bcLHPxofWuCjaeZg==
-
 npm-run-path@^2.0.0:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/npm-run-path/-/npm-run-path-2.0.2.tgz#35a9232dfa35d7067b4cb2ddf2357b1871536c5f"
@@ -3038,24 +3006,6 @@ parse-json@^5.0.0:
     json-parse-better-errors "^1.0.1"
     lines-and-columns "^1.1.6"
 
-parse-path@^4.0.0:
-  version "4.0.2"
-  resolved "https://registry.yarnpkg.com/parse-path/-/parse-path-4.0.2.tgz#ef14f0d3d77bae8dd4bc66563a4c151aac9e65aa"
-  integrity sha512-HSqVz6iuXSiL8C1ku5Gl1Z5cwDd9Wo0q8CoffdAghP6bz8pJa1tcMC+m4N+z6VAS8QdksnIGq1TB6EgR4vPR6w==
-  dependencies:
-    is-ssh "^1.3.0"
-    protocols "^1.4.0"
-
-parse-url@^5.0.0:
-  version "5.0.2"
-  resolved "https://registry.yarnpkg.com/parse-url/-/parse-url-5.0.2.tgz#856a3be1fcdf78dc93fc8b3791f169072d898b59"
-  integrity sha512-Czj+GIit4cdWtxo3ISZCvLiUjErSo0iI3wJ+q9Oi3QuMYTI6OZu+7cewMWZ+C1YAnKhYTk6/TLuhIgCypLthPA==
-  dependencies:
-    is-ssh "^1.3.0"
-    normalize-url "^3.3.0"
-    parse-path "^4.0.0"
-    protocols "^1.4.0"
-
 parse5@5.1.1:
   version "5.1.1"
   resolved "https://registry.yarnpkg.com/parse5/-/parse5-5.1.1.tgz#f68e4e5ba1852ac2cadc00f4555fff6c2abb6178"
@@ -3163,11 +3113,6 @@ prompts@^2.0.1:
     kleur "^3.0.3"
     sisteransi "^1.0.4"
 
-protocols@^1.1.0, protocols@^1.4.0:
-  version "1.4.8"
-  resolved "https://registry.yarnpkg.com/protocols/-/protocols-1.4.8.tgz#48eea2d8f58d9644a4a32caae5d5db290a075ce8"
-  integrity sha512-IgjKyaUSjsROSO8/D49Ab7hP8mJgTYcqApOqdPhLoPxAplXmkp+zRvsrSQjFn5by0rhm4VH0GAUELIPpx7B1yg==
-
 pseudomap@^1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/pseudomap/-/pseudomap-1.0.2.tgz#f052a28da70e618917ef0a8ac34c1ae5a68286b3"