Switch from docker to podman

Far less invasive, needs fewer permissions, etc.

tests/Makefile

@@ -1,6 +1,6 @@
 
 
-setup: checkout-testdata docker-compose-up
+setup: checkout-testdata podman-compose-up
 
 # checkout-testdata will checkout testdata from separate repository into git submodule.
 checkout-testdata:
@@ -10,11 +10,11 @@ checkout-testdata:
 checkout-latest-testdata: checkout-testdata
 	cd ./testdata && git fetch && git checkout master && git pull
 
-# docker-compose-up will download docker image for each of the databases listed in docker-compose.yaml file, and then it will initialize
+# podman-compose-up will download podman image for each of the databases listed in podman-compose.yaml file, and then it will initialize
 # database with testdata retrieved in previous step.
-# On the first run this action might take couple of minutes. Docker temp data are stored in .docker directory.
-docker-compose-up:
-	docker compose up
+# On the first run this action might take couple of minutes. Podman temp data are stored in .podman directory.
+podman-compose-up:
+	podman compose up
 
 init-all:
 	go run ./init/init.go -testsuite all
@@ -73,6 +73,6 @@ jet-gen-cockroach:
 	jet -dsn=postgres://jet:jet@localhost:26257/jetdb?sslmode=disable -schema=northwind   -path=./.gentestdata/
 	jet -dsn=postgres://jet:jet@localhost:26257/jetdb?sslmode=disable -schema=test_sample -path=./.gentestdata/
 
-# docker-compose-cleanup will stop and remove test containers, volumes, and images.
+# podman-compose-cleanup will stop and remove test containers, volumes, and images.
 cleanup:
-	docker compose down --volumes
+	podman compose down --volumes

tests/docker-compose.yaml

@@ -1,6 +1,6 @@
 services:
   postgres:
-    image: postgres:14.1
+    image: docker.io/library/postgres:14.1
     restart: always
     environment:
       - POSTGRES_USER=jet
@@ -12,7 +12,7 @@ services:
       - ./testdata/init/postgres:/docker-entrypoint-initdb.d
 
   mysql:
-    image: mysql/mysql-server:8.0.27
+    image: docker.io/library/mysql/mysql-server:8.0.27
     command: ['--default-authentication-plugin=mysql_native_password', '--log_bin_trust_function_creators=1']
     restart: always
     environment:
@@ -25,7 +25,7 @@ services:
       - ./testdata/init/mysql:/docker-entrypoint-initdb.d
 
   mariadb:
-    image: mariadb:11.4
+    image: docker.io/library/mariadb:11.4
     command: ['--default-authentication-plugin=mysql_native_password', '--log_bin_trust_function_creators=1']
     restart: always
     environment:
@@ -38,7 +38,7 @@ services:
       - ./testdata/init/mysql:/docker-entrypoint-initdb.d
 
   cockroach:
-    image: cockroachdb/cockroach-unstable:v23.1.0-rc.2
+    image: docker.io/library/cockroachdb/cockroach-unstable:v23.1.0-rc.2
     environment:
       - COCKROACH_USER=jet
       - COCKROACH_PASSWORD=jet