Fixed the Docker

Docker/Dockerfile

@@ -1,10 +1,15 @@
-FROM mono:6.12.0
+# Using the .NET official image for .NET 6.0
+FROM mcr.microsoft.com/dotnet/sdk:6.0
 
-COPY start-latest.sh /opt/start-latest.sh
+# If you want to use a specific build, un-comment the ENV MCC_VERSION line (remove the # from the start)
+# Then replace the <version> with a version of your choice (Example: MCC_VERSION=20220817-29)
+#ENV MCC_VERSION=<version>
+
+# Copy over the script and give it execution permissions
+COPY --chmod=0755 start-latest.sh /opt/start-latest.sh
 
 RUN apt-get update && \ 
-    apt-get install -y jq && \
-    mkdir /opt/data && \
-    chmod +x /opt/start-latest.sh
+    apt-get install -y unzip && \
+    mkdir /opt/data
 
 ENTRYPOINT ["/bin/sh", "-c", "/opt/start-latest.sh"]

Docker/start-latest.sh

@@ -2,11 +2,21 @@
 
 cd /opt/data || exit 1
 
-# Get latest release tag
-RELEASE_TAG=$(curl -s -v https://github.com/MCCTeam/Minecraft-Console-Client/releases/latest 2>&1 | grep -i location: | tr -d '\r' | cut -d/ -f8)
+# Use the provided version tag or get the latest release tag
+RELEASE_TAG=${MCC_VERSION:-$(curl -s -v https://github.com/MCCTeam/Minecraft-Console-Client/releases/latest 2>&1 | grep -i location: | tr -d '\r' | cut -d/ -f8)}
 
-# Download latest version
-curl -L https://github.com/MCCTeam/Minecraft-Console-Client/releases/download/${RELEASE_TAG}/MinecraftClient.exe --output MinecraftClient.exe
+# Delete the old build
+[ -e MinecraftClient-linux.zip ] && rm -- MinecraftClient-linux.zip
+[ -e MinecraftClient ] && rm -- MinecraftClient
 
-# Start Client
-mono MinecraftClient.exe
+# Download the specified build or the latest one
+curl -L https://github.com/MCCTeam/Minecraft-Console-Client/releases/download/${RELEASE_TAG}/MinecraftClient-linux.zip --output MinecraftClient-linux.zip
+
+# Unzip it
+unzip MinecraftClient-linux.zip
+
+# Remove the ZIP
+rm -- MinecraftClient-linux.zip
+
+# Start the Client
+./MinecraftClient