[Added] Basis for Backend

backend/Dockerfile

@@ -0,0 +1,26 @@
+FROM openjdk:17-jdk-slim AS base
+WORKDIR /app
+RUN apt-get update && apt install -y \
+    maven \
+    && apt-get clean \
+    && rm -rf /var/lib/apt/lists/*
+
+#---Development
+FROM base AS development
+# Switching user so it doesn't use root
+# If root adds files, it takes ownership, making them unremovable on the host except by using sudo
+# node tranfers ownership to the host user
+ENV UID=1000
+ENV GID=1000
+ENV USER=dev
+RUN groupadd -g ${GID} ${USER} \
+    && useradd -m -u ${UID} -g ${USER} ${USER}
+USER ${USER}
+EXPOSE 8080
+CMD ["tail","-f","/dev/null"]
+
+#---Building
+
+
+
+#---Production