1.編寫Dockerfile

進入專案目錄：

cd /var/apps/my-app

編寫Dockerfile

vim Dockerfile

Dockerfile檔案內容

# 基映象java8
FROM java:8
# 作者
MAINTAINER jeikerxiao
# 新增my-app-0.0.1.jar 到容器映象中，並重命名 app.jar
ADD my-app-0.0.1.jar app.jar
# 執行容器，監聽8080埠
EXPOSE 8080
# 啟動時執行 java -jar app.jar
ENTRYPOINT ["java","-jar","/app.jar"]

2.編譯映象

build當前目錄下的Dockerfile 檔案，命名為wisely/my-app。

➜ docker build -t wisely/my-app .

構建過程 ：

Sending build context to Docker daemon  28.88MB
Step 1/5 : FROM java:8
8: Pulling from library/java
5040bd298390: Pull complete
fce5728aad85: Pull complete
76610ec20bf5: Pull complete
60170fec2151: Pull complete
e98f73de8f0d: Pull complete
11f7af24ed9c: Pull complete
49e2d6393f32: Pull complete
bb9cdec9c7f3: Pull complete
Digest: sha256:c1ff613e8ba25833d2e1940da0940c3824f03f802c449f3d1815a66b7f8c0e9d
Status: Downloaded newer image for java:8
 ---> d23bdf5b1b1b
 
Step 2/5 : MAINTAINER jeikerxiao
 ---> Running in beda82b0d593
 ---> cc1e343348b6
Removing intermediate container beda82b0d593
Step 3/5 : ADD my-app-0.0.1.jar app.jar
 ---> 603da4e8c0f0
Removing intermediate container 7f72c9eb16a8
Step 4/5 : EXPOSE 8080
 ---> Running in 1fdd169fe9cc
 ---> 410b920c0879
 
Removing intermediate container 1fdd169fe9cc
Step 5/5 : ENTRYPOINT java -jar /app.jar
 ---> Running in 7f4405748fbf
 ---> f6a29955727e
Removing intermediate container 7f4405748fbf
Successfully built f6a29955727e
Successfully tagged wisely/my-app:latest

3.檢視映象

➜ docker images

REPOSITORY                 TAG                 IMAGE ID            CREATED             SIZE
wisely/my-app              latest              f6a29955727e        4 minutes ago       672MB
java                       8                   d23bdf5b1b1b        5 months ago        643MB
hello-world                latest              48b5124b2768        5 months ago        1.84kB

4.執行映象

執行命令，–name 重新命名：-p 埠暴露 當前伺服器埠：容器埠 映象名。

➜ docker run -d --name my-app -p 8088:8080 wisely/my-app

cb9022fd451eb05eba014ce6fb79144f6b50309742cf2bdbe1de638cdef351bf

5.檢視容器狀態

➜ docker ps

CONTAINER ID        IMAGE             COMMAND                CREATED             STATUS              PORTS                    NAMES
cb9022fd451e        wisely/my-app     "java -jar /app.jar"   12 seconds ago      Up 10 seconds       0.0.0.0:8088->8080/tcp   my-app

6.測試專案

http://192.168.191.32:8080/