Make it possible to change CWD before tests execution

Fixes: #47

Author: frenzymadness

.github/workflows/build-and-push.yml

@@ -64,6 +64,9 @@ jobs:
           TOXENV: ${{ matrix.toxenv }}
         run: |
           docker run --rm --platform linux/${{ matrix.arch }} -e DNF_INSTALL="libffi-devel pkgconfig(libgit2) /usr/bin/cowsay" fedorapython/fedora-python-tox:${{ matrix.arch }} sh -c "/run_tests.sh; pip install -I --no-deps --compile --no-binary :all: cffi pygit2~=1.5.0 && cowsay DONE"
+      - name: Test external project with WORKDIR
+        run: |
+          docker run --rm --platform linux/${{ matrix.arch }} -e TOXENV=py310-minimal -e GIT_URL=https://github.com/trezor/trezor-firmware.git -e WORKDIR=python fedorapython/fedora-python-tox:${{ matrix.arch }}
       - name: Login to DockerHub
         uses: docker/login-action@v1
         if: github.event_name == 'push' || github.event_name == 'schedule'

README.md

@@ -173,6 +173,14 @@ You can install packages by any RPM *Provides*, for example:
 * pkgconfig names, e.g. `pkgconfig(libgit2)`, or
 * commands, e.g. `/usr/bin/cowsay`.
 
+# WORKDIR
+
+If your `tox.ini` file is not in the root directory of your project, set `WORKDIR` to the path you want to cd to before the tests are executed.
+
+```
+docker run --rm -it -e TOXENV=py310-minimal -e GIT_URL=https://github.com/trezor/trezor-firmware.git -e WORKDIR=python fedora-python-tox
+```
+
 # License
 
 MIT

run_tests.sh

@@ -13,6 +13,11 @@ if [ ! -z "$DNF_INSTALL" ]; then
     dnf -y --setopt=tsflags=nodocs --setopt=deltarpm=false install $DNF_INSTALL
 fi
 
+if [ ! -z $WORKDIR ]; then
+    echo "Changing directory to $WORKDIR"
+    cd $WORKDIR
+fi
+
 # Mark the current directory as safe for Git:
 git --git-dir=~ config --system --add safe.directory $PWD