replaced shadow utils

Author: c3kay

Dockerfile

@@ -13,8 +13,9 @@ ENV MEM_SIZE="1G"
 
 COPY --chmod=755 ./install-gosu.sh ./install-paper.sh ./docker-entrypoint.sh /usr/local/bin/
 
-RUN yum install -y shadow-utils jq && \
-    useradd -r -u ${PUID} mc && \
+RUN yum install -y jq && \
+    echo "mc:x:${PUID}:${PUID}::/opt/minecraft:/sbin/nologin" >> /etc/passwd && \
+    echo "mc:x:${PUID}:" >> /etc/group && \
     mkdir -p /opt/minecraft/data && \
     install-gosu.sh && \
     install-paper.sh

docker-entrypoint.sh

@@ -1,9 +1,10 @@
 #!/usr/bin/env bash
 set -e
 
-if [ -n "${PUID}" ] && [ ! "${PUID}" = "$(id mc -u)" ]; then
-    usermod -o -u "$PUID" mc
-    echo "UID of mc user: $(id mc -u)"
+if [ -n "${PUID}" ] && [ ! "${PUID}" = "$(id -u mc)" ]; then
+  echo "UID: $(id -u mc) -> ${PUID}"
+  sed -i -E "s/^mc:([^:]*):[0-9]+:[0-9]+:/mc:\1:${PUID}:${PUID}:/" /etc/passwd
+  sed -i -E "s/^mc:([^:]*):[0-9]+:/mc:\1:${PUID}:/" /etc/group
 fi
 
 chown -R mc /opt/minecraft