diff --git a/.gitignore b/.gitignore
index 1d400eb3..2464473b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,6 +2,7 @@
 .idea/
 node_modules/
 .sass-cache/
+.npm/
 
 /auth/certs/
 /auth/js/auth.js.map
@@ -33,4 +34,4 @@ node_modules/
 /webpack/*.js
 /webpack/*.js.map
 
-/files_*.pem
\ No newline at end of file
+/files_*.pem
diff --git a/babel.config.ts b/babel.config.ts
index 952ab4b6..fd5da77f 100644
--- a/babel.config.ts
+++ b/babel.config.ts
@@ -4,14 +4,12 @@ export default api => {
         [
             "@babel/preset-env",
             {
-                "corejs": {"version": 3},
+                "corejs": {"version": '3.33', "proposals": false},
                 "useBuiltIns": "usage",
                 "targets": {
-                    "edge": "17",
-                    "firefox": "60",
-                    "chrome": "67",
-                    "safari": "11.1",
-                    "ie": "11"
+                    "edge": "111",
+                    "firefox": "100",
+                    "chrome": "109"
                 }
             }
         ]
diff --git a/package-lock.json b/package-lock.json
index 6e32608b..543338b1 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -19162,6 +19162,11 @@
             "object-assign": "^4.1.1",
             "react-is": "^16.13.1"
           }
+        },
+        "resize-observer-polyfill": {
+          "version": "1.5.1",
+          "resolved": "https://registry.npmjs.org/resize-observer-polyfill/-/resize-observer-polyfill-1.5.1.tgz",
+          "integrity": "sha512-LwZrotdHOo12nQuZlHEmtuXdqGoOD0OhaxopaNFxWzInpEgaLWoVuAMbTzixuosCx2nEG58ngzW3vxdWoxIgdg=="
         }
       }
     },
diff --git a/package.json b/package.json
index b1c15ddc..71021666 100644
--- a/package.json
+++ b/package.json
@@ -127,4 +127,4 @@
     "webpack-manifest-plugin": "^3.2.0",
     "webrtc-adapter": "^7.5.1"
   }
-}
\ No newline at end of file
+}
diff --git a/scripts/build.sh b/scripts/build.sh
old mode 100644
new mode 100755
diff --git a/scripts/build_declarations.sh b/scripts/build_declarations.sh
old mode 100644
new mode 100755
diff --git a/scripts/build_in_docker.sh b/scripts/build_in_docker.sh
new file mode 100755
index 00000000..5d79ed5e
--- /dev/null
+++ b/scripts/build_in_docker.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+
+SCRIPT=$(realpath "$0")
+SCRIPTPATH=$(dirname "$SCRIPT")
+BASEPATH="$(realpath "${SCRIPTPATH}/../")"
+
+NPM_DIR="${BASEPATH}/.npm"
+
+if [[ ! -d "${NPM_DIR}" ]]; then
+    mkdir "${NPM_DIR}" || exit 1
+fi
+
+if [[ "${BUILDINDOCKER:-}" != "yes" ]]; then
+    docker run --rm --workdir "/work" -v "${NPM_DIR}:/home/" -v "${BASEPATH}:/work" -e BUILDINDOCKER=yes node:14-bullseye /bin/bash -c 'chmod +x /work/scripts/build_in_docker.sh && /work/scripts/build_in_docker.sh'
+    exit
+fi
+
+## in docker
+
+echo "adding npmrc"
+cat >>"${HOME}/.npmrc" <<'EOF'
+cache=/work/.npm
+fund=false
+EOF
+
+echo "adding secure git dir"
+git config --global --add safe.directory /work
+
+echo "running chmods"
+find "${BASEPATH}" -iname "*.sh" -exec chmod +x {} +
+
+echo "Cleaning up old files"
+"${BASEPATH}/scripts/cleanup.sh" full >/dev/null 2>&1 || exit 1
+
+echo "Installing npm packages"
+npm i || exit 1
+
+echo "Updating browser list"
+npx browserslist@latest --update-db || exit 1
+
+echo "running build"
+"${BASEPATH}/scripts/build.sh" web rel
+
+echo "fixing perms"
+chown -R 1000:1000 /work
diff --git a/scripts/travis/build.sh b/scripts/travis/build.sh
old mode 100644
new mode 100755
diff --git a/webpack.config.ts b/webpack.config.ts
index e7d62180..833a985c 100644
--- a/webpack.config.ts
+++ b/webpack.config.ts
@@ -46,9 +46,9 @@ const generateLocalBuildInfo = async (target: string): Promise<LocalBuildInfo> =
     {
         const gitRevision = fs.readFileSync(path.join(__dirname, ".git", "HEAD")).toString();
         if(gitRevision.indexOf("/") === -1) {
-            info.gitVersion = (gitRevision || "00000000").substr(0, 8);
+            info.gitVersion = (gitRevision || "00000000").substring(0, 8);
         } else {
-            info.gitVersion = fs.readFileSync(path.join(__dirname, ".git", gitRevision.substr(5).trim())).toString().substr(0, 8);
+            info.gitVersion = fs.readFileSync(path.join(__dirname, ".git", gitRevision.substring(5).trim())).toString().substring(0, 8);
         }
 
         try {