Add v4, with proxy, app and db

bulletin-board-db/Dockerfile

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+FROM microsoft/mssql-server-linux:2017-CU1
+
+ENV ACCEPT_EULA=Y \
+    MSSQL_SA_PASSWORD=DockerCon!!!
+
+WORKDIR /init
+COPY init-db.* ./
+
+RUN chmod +x ./init-db.sh
+RUN /opt/mssql/bin/sqlservr & ./init-db.sh

bulletin-board-db/init-db.sh

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+sleep 30s
+
+/opt/mssql-tools/bin/sqlcmd -S localhost -U SA -P DockerCon!!! -i init-db.sql

bulletin-board-db/init-db.sql

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+CREATE DATABASE BulletinBoard;
+GO
+
+USE BulletinBoard;
+
+CREATE TABLE Events (
+  Id INT IDENTITY(1,1) NOT NULL PRIMARY KEY,
+  Title NVARCHAR(50),
+  Detail NVARCHAR(200),
+  [Date] DATETIMEOFFSET,
+  CreatedAt DATETIMEOFFSET NOT NULL, 
+  UpdatedAt DATETIMEOFFSET NOT NULL
+);
+
+INSERT INTO Events (Title, Detail, [Date], CreatedAt, UpdatedAt) VALUES
+(N'Docker for Beginners', N'Introduction to Docker using Node.js', '2017-11-21', GETDATE(), GETDATE()),
+(N'Advanced Orchestration', N'Deep dive into Docker Swarm', '2017-12-25', GETDATE(), GETDATE()),
+(N'Docker on Windows', N'From 101 to production', '2018-01-01', GETDATE(), GETDATE());
+
+SELECT * FROM BulletinBoard.dbo.Events;