Use only 8, 11, 16 (and OpenJ9 variants)

.github/workflows/java.yml

@@ -15,12 +15,12 @@ jobs:
       fail-fast: false
       matrix:
         tag:
-          - 7
           - 8
-          - 9
+          - 8j9
           - 11
-          - 14
+          - 11j9
           - 16
+          - 16j9
     steps:
       - uses: actions/checkout@v2
       - uses: docker/setup-buildx-action@v1

java/11/Dockerfile

@@ -20,7 +20,7 @@
 # SOFTWARE.
 #
 
-FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk11:debianslim-jre
+FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk11:alpine-jre
 
 LABEL       author="Matthew Penner" maintainer="matthew@pterodactyl.io"
 

java/11j9/Dockerfile

@@ -20,7 +20,7 @@
 # SOFTWARE.
 #
 
-FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk9:debianslim-jre
+FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk11-openj9:alpine-jre
 
 LABEL       author="Matthew Penner" maintainer="matthew@pterodactyl.io"
 

java/16/Dockerfile

@@ -20,7 +20,7 @@
 # SOFTWARE.
 #
 
-FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk16:debianslim-jre
+FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk16:alpine-jre
 
 LABEL       author="Matthew Penner" maintainer="matthew@pterodactyl.io"
 

java/16j9/Dockerfile

@@ -20,7 +20,7 @@
 # SOFTWARE.
 #
 
-FROM        --platform=$BUILDPLATFORM openjdk:7-jre-alpine
+FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk16-openj9:alpine-jre
 
 LABEL       author="Matthew Penner" maintainer="matthew@pterodactyl.io"
 
@@ -28,7 +28,7 @@ LABEL       org.opencontainers.image.source="https://github.com/pterodactyl/yolk
 LABEL       org.opencontainers.image.licenses=MIT
 
 RUN         apk add --update --no-cache ca-certificates curl fontconfig git openssl sqlite tar tzdata \
-				&& adduser -D -h /home/container container
+			    && adduser -D -h /home/container container
 
 USER        container
 ENV         USER=container HOME=/home/container

java/8/Dockerfile

@@ -20,7 +20,7 @@
 # SOFTWARE.
 #
 
-FROM        --platform=$BUILDPLATFORM ibmjava:8-jre-alpine
+FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk8:alpine-jre
 
 LABEL       author="Matthew Penner" maintainer="matthew@pterodactyl.io"
 

java/8j9/Dockerfile

@@ -20,7 +20,7 @@
 # SOFTWARE.
 #
 
-FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk14:debianslim-jre
+FROM        --platform=$BUILDPLATFORM adoptopenjdk/openjdk8-openj9:alpine-jre
 
 LABEL       author="Matthew Penner" maintainer="matthew@pterodactyl.io"