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Adjustment to workflow to set dns nameservers and preserve resolv.conf.

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zinobias 2023-05-15 10:28:02 +02:00 committed by Alessandro Pignotti
parent 556cdad01c
commit 945d648035
1 changed files with 7 additions and 4 deletions
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9
.github/workflows/build_and_deploy_ext2_img.yml vendored
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@ -93,7 +93,8 @@ jobs:
- run: docker build . --tag $TAG --file ${{ github.event.inputs.DOCKERFILE_PATH }} --platform=i386 - run: docker build . --tag $TAG --file ${{ github.event.inputs.DOCKERFILE_PATH }} --platform=i386
# Run the docker image so that we can export the container. # Run the docker image so that we can export the container.
- run: docker run -d $TAG # Run the Docker container with the Google Public DNS nameservers: 8.8.8.8, 8.8.4.4
- run: docker run --dns 8.8.8.8 --dns 8.8.4.4 -d $TAG
# We create and mount the base ext2 image to extract the Docker container's filesystem its contents into. # We create and mount the base ext2 image to extract the Docker container's filesystem its contents into.
- name: Create ext2 image. - name: Create ext2 image.
@ -105,10 +106,12 @@ jobs:
# Mount the ext2 image to modify it # Mount the ext2 image to modify it
sudo mount -o loop -t ext2 ${DEPLOY_DIR}/${IMAGE_NAME} /mnt/ sudo mount -o loop -t ext2 ${DEPLOY_DIR}/${IMAGE_NAME} /mnt/
# We choose to use Docker export instead of Docker save because we only care about the final result and not the metadata and separate layers of the Docker image. # We opt for 'docker cp --archive' over 'docker save' since our focus is solely on the end product rather than individual layers and metadata.
# However, it's important to note that despite being specified in the documentation, the '--archive' flag does not currently preserve uid/gid information when copying files from the container to the host machine.
# Another compelling reason to use 'docker cp' is that it preserves resolv.conf.
- name: Export and unpack container filesystem contents into mounted ext2 image. - name: Export and unpack container filesystem contents into mounted ext2 image.
run: | run: |
docker export $(sudo docker ps -aq) | sudo tar -x -C /mnt/ sudo docker cp -a $(sudo docker ps -aq):/ /mnt/
sudo umount /mnt/ sudo umount /mnt/
# Result is an ext2 image for webvm. # Result is an ext2 image for webvm.