Merge branch 'cdalvaro/podman_support'

Closes #16

compose-check.sh

@@ -2,28 +2,40 @@
 # Verifies that files passed in are valid for docker-compose
 set -e
 
-if command -v docker &> /dev/null && docker help compose &> /dev/null; then
-    COMPOSE="docker compose"
-elif command -v docker-compose &> /dev/null ; then
-    COMPOSE=docker-compose
+# Check if docker or podman commands are available
+if [[ -z "${CONTAINER_ENGINE}" ]]; then
+    if command -v docker &>/dev/null; then
+        CONTAINER_ENGINE=docker
+    elif command -v podman &>/dev/null; then
+        CONTAINER_ENGINE=podman
+    else
+        echo "ERROR: Neither 'docker' or 'podman' were found"
+        exit 1
+    fi
+fi
+
+if command -v "${CONTAINER_ENGINE}" &>/dev/null && ${CONTAINER_ENGINE} help compose &> /dev/null; then
+    COMPOSE="${CONTAINER_ENGINE} compose"
+elif command -v "${CONTAINER_ENGINE}-compose" &> /dev/null; then
+    COMPOSE="${CONTAINER_ENGINE}-compose"
 else
-    echo "ERROR: Neither 'docker-compose' or 'docker compose' were found"
+    echo "ERROR: Neither '${CONTAINER_ENGINE}-compose' or '${CONTAINER_ENGINE} compose' were found"
     exit 1
 fi
 
 check_file() {
     local file=$1
-    env $COMPOSE --file "$file" config --quiet 2>&1 \
-        | sed "/variable is not set. Defaulting/d"
+    env $COMPOSE --file "$file" config --quiet 2>&1 |
+        sed "/variable is not set. Defaulting/d"
     return "${PIPESTATUS[0]}"
 }
 
 check_files() {
     local all_files=( "$@" )
     has_error=0
-    for file in "${all_files[@]}" ; do
+    for file in "${all_files[@]}"; do
         if [[ -f "$file" ]]; then
-            if ! check_file "$file" ; then
+            if ! check_file "$file"; then
                 echo "ERROR: $file"
                 has_error=1
             fi
@@ -32,7 +44,7 @@ check_files() {
     return $has_error
 }
 
-if ! check_files "$@" ; then
+if ! check_files "$@"; then
     echo "Some compose files failed"
 fi