Update Dockerfile

Fix butler download url

Dockerfile

@@ -1,16 +1,19 @@
-FROM centos:8
+FROM rockylinux:8
 
 LABEL "com.github.actions.name"="Butler Push"
 LABEL "com.github.actions.description"="Publishes releases to Itch.io using Butler"
 LABEL "com.github.actions.icon"="upload"
 LABEL "com.github.actions.color"="white"
 
+RUN dnf install unzip -y
+
 # Install Butler
-ADD https://dl.itch.ovh/butler/linux-amd64/head/butler /usr/bin/
+RUN curl -L -o butler.zip https://broth.itch.ovh/butler/linux-amd64/LATEST/archive/default \
-RUN chmod +x /usr/bin/butler
+    && unzip butler.zip \
-RUN butler upgrade --assume-yes
+    && cp butler /usr/bin \
+    && chmod +x /usr/bin/butler
 
 # Run butler push
-ADD entrypoint.sh /entrypoint.sh
+COPY entrypoint.sh /entrypoint.sh
 RUN chmod +x entrypoint.sh
 ENTRYPOINT ["/entrypoint.sh"]

entrypoint.sh

@@ -1,8 +1,7 @@
 #!/bin/sh
 set -e
 
-mkdir -p ~/.config/itch
+export BUTLER_API_KEY=$BUTLER_CREDENTIALS
-echo $BUTLER_CREDENTIALS > ~/.config/itch/butler_creds
 
 versionArgument=""