diff --git a/.dockerignore b/.dockerignore
index ef71f62e0..137589ad0 100644
--- a/.dockerignore
+++ b/.dockerignore
@@ -2,3 +2,6 @@
 .git
 website
 assets
+private
+e2e
+.env
diff --git a/.github/workflows/companion.yml b/.github/workflows/companion.yml
index 915ce06e2..94e684187 100644
--- a/.github/workflows/companion.yml
+++ b/.github/workflows/companion.yml
@@ -46,4 +46,6 @@ jobs:
         run: corepack yarn workspaces focus @uppy/companion
       - name: Run tests
         run: corepack yarn run test:companion
+      - name: Run type checks in focused workspace
+        run: corepack yarn run build:companion
 
diff --git a/Dockerfile b/Dockerfile
index 73ee41638..dd2891d37 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,9 +5,7 @@ RUN if [ "$(uname -m)" == "aarch64" ]; then mkdir -p /usr/local/sbin/ && ln -s /
 
 WORKDIR /app
 
-COPY package.json .yarnrc.yml /app/
-COPY .yarn /app/.yarn
-COPY packages/@uppy/companion /app/packages/@uppy/companion
+COPY . /app/
 
 RUN apk --update add  --virtual native-dep \
   make gcc g++ python3 libgcc libstdc++ git && \