Add docker_sanitize_tag()

* Replace invalid docker tag characters with dash ('-')

1 files changed, 12 insertions, 0 deletions

diff --git a/src/docker.c b/src/docker.c
index d5cffd9..e2a392b 100644
--- a/src/docker.c
+++ b/src/docker.c
@@ -168,3 +168,15 @@ int docker_capable(struct DockerCapabilities *result) {
     result->usable = true;
     return true;
 }
+
+void docker_sanitize_tag(char *str) {
+    char *pos = str;
+    while (*pos != 0) {
+        if (!isalnum(*pos)) {
+            if (*pos != '.' && *pos != ':' && *pos != '/') {
+                *pos = '-';
+            }
+        }
+        pos++;
+    }
+}