Add a bunch more java images, syntax changes

java7/Dockerfile

@@ -0,0 +1,21 @@
+#
+# Copyright (c) 2020 Matthew Penner
+#
+# This repository is licensed under the MIT License.
+# https://github.com/matthewpi/images/blob/master/LICENSE.md
+#
+
+FROM        openjdk:7-jre-alpine
+
+LABEL       author="Matthew Penner" maintainer="me@matthewp.io"
+
+RUN         apk add --update --no-cache curl ca-certificates openssl git tar bash sqlite fontconfig tzdata \
+			    && adduser -D -h /home/container container \
+			    && ln -s /etc/localtime /etc/timezone
+
+USER        container
+ENV         USER=container HOME=/home/container
+WORKDIR     /home/container
+
+COPY        ./entrypoint.sh /entrypoint.sh
+CMD         [ "/bin/ash", "/entrypoint.sh" ]