fix(ci): Set HOME=/root for containers to fix Firefox launch

Firefox refuses to run as root when HOME points to a directory owned by
a different user. GHA sets HOME=/github/home (owned by runner) but we
run as --user root. Setting HOME=/root fixes the ownership mismatch.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: mydea

.github/workflows/build.yml

@@ -505,6 +505,8 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
       options: --ipc=host --user root
+      env:
+        HOME: /root
     timeout-minutes: 25
     strategy:
       fail-fast: false
@@ -609,6 +611,8 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
       options: --ipc=host --user root
+      env:
+        HOME: /root
     timeout-minutes: 15
     strategy:
       fail-fast: false
@@ -829,6 +833,8 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
       options: --ipc=host --user root
+      env:
+        HOME: /root
     timeout-minutes: 15
     strategy:
       fail-fast: false
@@ -933,6 +939,8 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
       options: --ipc=host --user root
+      env:
+        HOME: /root
     timeout-minutes: 15
     env:
       # We just use a dummy DSN here, only send to the tunnel anyhow
@@ -1065,6 +1073,8 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
       options: --ipc=host --user root
+      env:
+        HOME: /root
     timeout-minutes: 15
     env:
       E2E_TEST_AUTH_TOKEN: ${{ secrets.E2E_TEST_AUTH_TOKEN }}

.github/workflows/canary.yml

@@ -78,6 +78,8 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
       options: --ipc=host --user root
+      env:
+        HOME: /root
     timeout-minutes: 20
     env:
       # We just use a dummy DSN here, only send to the tunnel anyhow

.github/workflows/flaky-test-detector.yml

@@ -46,6 +46,8 @@ jobs:
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
       options: --ipc=host --user root
+      env:
+        HOME: /root
     timeout-minutes: 60
     name: 'Check tests for flakiness'
     # Also skip if PR is from master -> develop