run gha as root in docker

using the opam user wouldn't work for actions like checkout

.github/workflows/format.yml

@@ -10,9 +10,13 @@ jobs:
   format:
     name: format
     runs-on: ubuntu-latest
-    container: ghcr.io/ocaml-tracing/ocaml-opentelemetry/ci-4.14:latest
+    container:
+      image: ghcr.io/ocaml-tracing/ocaml-opentelemetry/ci-4.14:latest
+      options: --user root
 
     steps:
       - uses: actions/checkout@v4
 
-      - run: opam exec -- make format-check
+      - run: chown -R opam:opam .
+
+      - run: su opam -c "opam exec -- make format-check"

.github/workflows/gh-pages.yml

@@ -8,23 +8,27 @@ on:
 jobs:
   deploy:
     runs-on: ubuntu-latest
-    container: ghcr.io/ocaml-tracing/ocaml-opentelemetry/ci-5.4:latest
+    container:
+      image: ghcr.io/ocaml-tracing/ocaml-opentelemetry/ci-5.4:latest
+      options: --user root
 
     steps:
       - uses: actions/checkout@v4
         with:
           submodules: recursive
 
+      - run: chown -R opam:opam .
+
       - name: Install local packages
-        run: opam exec -- dune build @install && opam exec -- dune install
+        run: su opam -c "opam exec -- dune build @install && opam exec -- dune install"
 
       - name: Build documentation
         run: |
-          opam exec -- odig odoc --cache-dir=_doc/ \
+          su opam -c "opam exec -- odig odoc --cache-dir=_doc/ \
             opentelemetry opentelemetry-client opentelemetry-lwt \
             opentelemetry-cohttp-lwt opentelemetry-client-ocurl \
             opentelemetry-client-ocurl-lwt opentelemetry-client-cohttp-lwt \
-            opentelemetry-client-cohttp-eio opentelemetry-logs
+            opentelemetry-client-cohttp-eio opentelemetry-logs"
 
       - name: Deploy
         uses: peaceiris/actions-gh-pages@v3

.github/workflows/main.yml

@@ -23,7 +23,9 @@ jobs:
             eio: true
 
     runs-on: ubuntu-latest
-    container: ${{ matrix.container }}
+    container:
+      image: ${{ matrix.container }}
+      options: --user root
 
     steps:
       - name: Checkout code
@@ -31,18 +33,20 @@ jobs:
         with:
           submodules: recursive
 
+      - run: chown -R opam:opam .
+
       - name: Build
-        run: opam exec -- dune build @install -p opentelemetry,opentelemetry-client,opentelemetry-lwt,opentelemetry-cohttp-lwt,opentelemetry-client-ocurl,opentelemetry-client-ocurl-lwt,opentelemetry-client-cohttp-lwt,opentelemetry-logs
+        run: su opam -c "opam exec -- dune build @install -p opentelemetry,opentelemetry-client,opentelemetry-lwt,opentelemetry-cohttp-lwt,opentelemetry-client-ocurl,opentelemetry-client-ocurl-lwt,opentelemetry-client-cohttp-lwt,opentelemetry-logs"
 
       - name: Build eio packages
         if: ${{ matrix.eio }}
-        run: opam exec -- dune build @install -p opentelemetry-client-cohttp-eio
+        run: su opam -c "opam exec -- dune build @install -p opentelemetry-client-cohttp-eio"
 
       - name: Lint (protoc check)
-        run: opam exec -- dune build @lint
+        run: su opam -c "opam exec -- dune build @lint"
 
       - name: Check no generated files changed
         run: git diff --exit-code
 
       - name: Run tests
-        run: opam exec -- dune build @runtest
+        run: su opam -c "opam exec -- dune build @runtest"