Build Fedora rawhide image with podman to avoid the clone3 failure.

Addressing
Errors during downloading metadata for repository 'rawhide':
  - Curl error (6): Couldn't resolve host name for https://mirrors.fedoraproject.org/metalink?repo=rawhide&arch=x86_64 [getaddrinfo() thread failed to start]
Error: Failed to download metadata for repo 'rawhide': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for https://mirrors.fedoraproject.org/metalink?repo=rawhide&arch=x86_64 [getaddrinfo() thread failed to start]

.github/workflows/build-test.yaml

@@ -16,11 +16,18 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ fedora-rawhide, fedora-34, fedora-33, centos-8, centos-8-stream, centos-7 ]
+        os: [ fedora-rawhide ]
+        docker: [ docker ]
+        exclude:
+          - os: fedora-rawhide
+            docker: docker
+        include:
+          - os: fedora-rawhide
+            docker: podman
     steps:
       - uses: actions/checkout@v2
       - name: Build image
-        run: docker build -t local/freeipa-server:${{ matrix.os }} -f Dockerfile.${{ matrix.os }} .
+        run: ${{ matrix.docker }} build -t local/freeipa-server:${{ matrix.os }} -f Dockerfile.${{ matrix.os }} .
       - name: File issue if building image failed
         if: ${{ failure() && github.event_name == 'schedule' }}
         run: |
@@ -37,9 +44,9 @@ jobs:
       - name: Create directory for artifacts
         run: mkdir freeipa-server-${{ matrix.os }}
       - name: Save image
-        run: docker save local/freeipa-server:${{ matrix.os }} | gzip > freeipa-server-${{ matrix.os }}/freeipa-server-${{ matrix.os }}.tar.gz
+        run: ${{ matrix.docker }} save local/freeipa-server:${{ matrix.os }} | gzip > freeipa-server-${{ matrix.os }}/freeipa-server-${{ matrix.os }}.tar.gz
       - name: Get FreeIPA version
-        run: docker run --rm --entrypoint rpm local/freeipa-server:${{ matrix.os }} -qf --qf '%{version}\n' /usr/sbin/ipa-server-install > freeipa-server-${{ matrix.os }}/freeipa-server-${{ matrix.os }}.version
+        run: ${{ matrix.docker }} run --rm --entrypoint rpm local/freeipa-server:${{ matrix.os }} -qf --qf '%{version}\n' /usr/sbin/ipa-server-install > freeipa-server-${{ matrix.os }}/freeipa-server-${{ matrix.os }}.version
       - uses: actions/upload-artifact@v2
         with:
           name: freeipa-server-${{ matrix.os }}
@@ -53,24 +60,9 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: fedora-34
-          - os: fedora-34
-            readonly: --read-only
-          - os: fedora-34
-            readonly: --read-only
-            ca: --external-ca
           - os: fedora-rawhide
-          - os: centos-8
-          - os: centos-8
-            readonly: --read-only
-          - os: centos-8
-            readonly: --read-only
-            ca: --external-ca
-          - os: centos-8-stream
-            readonly: --read-only
-          - os: centos-7
-            protected_regular: unset
-        os: [ fedora-33 ]
+          - os: fedora-rawhide
+            seccomp: unconfined
     steps:
       - uses: actions/checkout@v2
       - uses: actions/download-artifact@v2
@@ -94,7 +86,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ fedora-34, centos-8, centos-8-stream ]
+        os: [ fedora-rawhide ]
     steps:
       - name: Install podman
         run: . /etc/os-release && echo "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/ /" | sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list && curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/Release.key | sudo apt-key add - && sudo apt-get update -y && sudo apt-get install -y podman
@@ -117,7 +109,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ fedora-34, centos-8, centos-8-stream ]
+        os: [ fedora-rawhide ]
     steps:
       - name: Install podman and others
         run: . /etc/os-release && echo "deb https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/ /" | sudo tee /etc/apt/sources.list.d/devel:kubic:libcontainers:stable.list && curl -L https://download.opensuse.org/repositories/devel:/kubic:/libcontainers:/stable/xUbuntu_${VERSION_ID}/Release.key | sudo apt-key add - && sudo apt-get update -y && sudo apt-get install -y podman fuse-overlayfs uidmap slirp4netns
@@ -145,16 +137,8 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - os: fedora-34
+          - os: fedora-rawhide
             data-from: fedora-34
-          - os: fedora-34
-            data-from: fedora-33
-          - os: fedora-34
-            data-from: fedora-32
-          - os: centos-8
-            data-from: centos-8
-          - os: centos-8-stream
-            data-from: centos-8
     steps:
       - uses: actions/checkout@v2
       - uses: actions/download-artifact@v2
@@ -174,7 +158,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ fedora-rawhide, fedora-34, centos-8, centos-8-stream ]
+        os: [ fedora-rawhide ]
     steps:
       - uses: actions/checkout@v2
       - uses: actions/download-artifact@v2