chore: build the backend container

.gitignore

@@ -0,0 +1 @@
+docker/.env

docker/Dockerfile.backend

@@ -0,0 +1,24 @@
+FROM maven:3-jdk-7 AS build
+ENV BUILD_UID=1000
+ENV BUILD=/src
+ENV MAVEN_HOME=/var/maven
+ENV MAVEN_CONFIG=/var/maven/.m2
+RUN mkdir -p $MAVEN_HOME && chown $BUILD_UID $MAVEN_HOME
+RUN mkdir -p $BUILD
+ADD .. $BUILD
+RUN chown -R $BUILD_UID $BUILD
+USER $BUILD_UID
+WORKDIR $BUILD
+RUN --mount=type=cache,target=$MAVEN_HOME/.m2,uid=$BUILD_UID mvn -e -Duser.home=$MAVEN_HOME package
+
+FROM openjdk:7u211-jre-alpine
+RUN <<EOF
+	set -e
+	mkdir -p /app
+	chown 1000 /app
+EOF
+COPY --from=build /src/legacyworlds-server/legacyworlds-server-main/target/*.jar /app/server.jar
+COPY --from=build /src/legacyworlds-server/legacyworlds-server-main/target/lib /app/lib
+ADD docker/backend-entrypoint.sh /app/entrypoint.sh
+ENTRYPOINT ["/app/entrypoint.sh"]
+CMD ["server"]

docker/backend-entrypoint.sh

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+#!/bin/sh
+
+cd /app
+
+if ! [ -z "$LW_CONFIGURE" ]; then
+	if [ -z "$DB_PASSWORD_FILE" ]; then
+		password="$DB_PASSWORD"
+	else
+		password="`cat $DB_PASSWORD_FILE`"
+	fi
+	cat >data-source.xml <<EOF
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+	xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
+	<bean name="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
+		<property name="driverClassName" value="org.postgresql.Driver" />
+		<property name="url" value="jdbc:postgresql://${DB_HOST}:5432/${DB_NAME}" />
+		<property name="username" value="${DB_USER}" />
+		<property name="password" value="${password}" />
+	</bean>
+</beans>
+EOF
+fi
+
+cmd="$1"
+shift
+if [ "$cmd" == server ]; then
+	exec /usr/bin/java \
+		-Dlog4j.configuration=log4j.properties \
+		-jar server.jar
+elif [ "$cmd" == shell ]; then
+	exec /bin/sh
+elif [ "$cmd" == tool ]; then
+	exec /usr/bin/java \
+		-jar legacyworlds-server-main-*.jar \
+		--run-tool "$*"
+else
+	echo "Invalid command '$cmd'" >&2
+	exit 1
+fi

docker/compose.yml

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+name: lwb6
+
+services:
+
+  backend:
+    build:
+      context: ..
+      dockerfile: docker/Dockerfile.backend
+    restart: always
+    environment:
+      LW_CONFIGURE: 1
+      LW_DB_HOST: db
+      LW_DB_NAME: lwb6
+      LW_DB_USER: lwb6
+      LW_DB_PASSWORD_FILE: /run/secrets/lw_db_password
+    secrets:
+      - lw_db_password
+
+secrets:
+  lw_db_password:
+    environment: LW_DB_PASSWORD

docker/env.example

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+# Password for the database superuser
+DB_PASSWORD=hVVCS5cQG17aZBk32m0wDHAluvzgyj4n
+
+# Legacyworlds database password
+LW_DB_PASSWORD=aXIQkMFFzjb4Ad7nvJgO5JhNtWxo62Du

pom.xml

@@ -15,8 +15,8 @@
 				<artifactId>maven-compiler-plugin</artifactId>
 				<version>2.2</version>
 				<configuration>
-					<source>1.6</source>
+					<source>1.7</source>
-					<target>1.6</target>
+					<target>1.7</target>
 				</configuration>
 			</plugin>
 		</plugins>