[gobject-introspection/ebassi/issue-319: 14/20] ci: Update run-docker scripts to work with Podman

[Emmanuele Bassi <ebassi src gnome org>]

commit ae0bb235c8de10ffcdd471d3f65b20b17e3c36bd
Author: Emmanuele Bassi <ebassi gnome org>
Date:   Wed Jun 2 12:11:48 2021 +0100

    ci: Update run-docker scripts to work with Podman
    
    Not every Linux distro ships with Docker, and Podman is nicer.

 .gitlab-ci/run-docker-minimal.sh | 33 +++++++++++++++++++++++++++------
 .gitlab-ci/run-docker.sh         | 32 ++++++++++++++++++++++++++------
 2 files changed, 53 insertions(+), 12 deletions(-)
---
diff --git a/.gitlab-ci/run-docker-minimal.sh b/.gitlab-ci/run-docker-minimal.sh
index 36b2d376..b090c5eb 100755
--- a/.gitlab-ci/run-docker-minimal.sh
+++ b/.gitlab-ci/run-docker-minimal.sh
@@ -1,11 +1,32 @@
 #!/bin/bash
 
+if [ ! -x "$(command -v docker)" ] || [ docker --help |& grep -q podman ]; then
+        # Docker is actually implemented by podman, and its OCI output
+        # is incompatible with some of the dockerd instances on GitLab
+        # CI runners.
+        echo "Using: Podman"
+        format="--format docker"
+        CMD="podman"
+else
+        echo "Using: Docker"
+        format=""
+        CMD="sudo docker"
+fi
+
 set -e
 
-TAG="registry.gitlab.gnome.org/gnome/gobject-introspection:min-v1"
+REGISTRY="registry.gitlab.gnome.org/gnome/gobject-introspection"
+TAG="${REGISTRY}:min-v1"
+
+${CMD} build \
+        ${format} \
+        --build-arg HOST_USER_ID="$UID" \
+        --tag "${TAG}" \
+        --file "minimal.Dockerfile" .
 
-sudo docker build --build-arg HOST_USER_ID="$UID" --tag "${TAG}" \
-    --file "minimal.Dockerfile" .
-sudo docker run --rm \
-    --volume "$(pwd)/..:/home/user/app" --workdir "/home/user/app" \
-    --tty --interactive "${TAG}" bash
+${CMD} run \
+        --rm \
+        --volume "$(pwd)/..:/home/user/app" --workdir "/home/user/app" \
+        --tty --interactive \
+        "${TAG}" \
+        bash
diff --git a/.gitlab-ci/run-docker.sh b/.gitlab-ci/run-docker.sh
index ad73d3ba..6c03d8b0 100755
--- a/.gitlab-ci/run-docker.sh
+++ b/.gitlab-ci/run-docker.sh
@@ -1,11 +1,31 @@
 #!/bin/bash
 
+if [ ! -x "$(command -v docker)" ] || [ docker --help |& grep -q podman ]; then
+        # Docker is actually implemented by podman, and its OCI output
+        # is incompatible with some of the dockerd instances on GitLab
+        # CI runners.
+        echo "Using: Podman"
+        format="--format docker"
+        CMD="podman"
+else
+        echo "Using: Docker"
+        format=""
+        CMD="sudo docker"
+fi
+
 set -e
 
-TAG="registry.gitlab.gnome.org/gnome/gobject-introspection:v8"
+REGISTRY="registry.gitlab.gnome.org/gnome/gobject-introspection"
+TAG="${REGISTRY}:v8"
 
-sudo docker build --build-arg HOST_USER_ID="$UID" --tag "${TAG}" \
-    --file "Dockerfile" .
-sudo docker run --rm \
-    --volume "$(pwd)/..:/home/user/app" --workdir "/home/user/app" \
-    --tty --interactive "${TAG}" bash
+${CMD} build \
+        ${format} \
+        --build-arg HOST_USER_ID="$UID" \
+        --tag "${TAG}" \
+        --file "Dockerfile" .
+${CMD} run \
+        --rm \
+        --volume "$(pwd)/..:/home/user/app" --workdir "/home/user/app" \
+        --tty --interactive \
+        "${TAG}" \
+        bash