Abstract
Dockerfile と Manifest File ( kind: Deployment ) を書く機会があったのでまとめておきます。
1. Dockerfile
- Command
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docker build -t test-image .
docker images
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imageの一括削除の参考は以下
1.1. Sample - Execute SpringBoot Jar
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FROM openjdk:11-jre
ARG JAR_FILE=./build/libs/simple-restcontroller-0.0.1-SNAPSHOT.jar
COPY ${JAR_FILE} app.jar
ENTRYPOINT ["java", "-jar", "./app.jar"]
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1.2. Sample - Copy File
- フォルダ構成
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[username@instance-1 work]$ tree -L 3
.
├── Dockerfile
├── home
│ ├── boot
│ │ └── init_run.sh
│ │ └── sample.jar
│ ├── env
│ │ └── env.conf
│ └── lib
│ └── hoge.jar
└── root
└── opt
└── oracle
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- Dockerfile
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FROM centos:7
ENV TEST_HOME /usr/test/home
# mkdir
RUN mkdir -p ${TEST_HOME}
# copy
COPY root/opt /opt
COPY home ${TEST_HOME}
# init settings and run boot app
ENTRYPOINT sh ${TEST_HOME}/boot/init_run.sh
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- init_run.sh
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# initialize processing
## do something
# run boot app
JAR_NAME="sample.jar"
JAVA_OPTIONS=(
""
)
SPRING_OPTIONS=(
""
)
java ${JAVA_OPTIONS} -jar ${JAR_NAME} ${SPRING_OPTIONS}
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1.3. Sample - Multi-stage Builds
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# syntax=docker/dockerfile:experimental
FROM openjdk:11-jdk AS builder
ADD . /work
WORKDIR /work/simple-restcontroller
RUN --mount=type=cache,target=/root/.gradle \
./gradlew clean build
FROM openjdk:11-jre AS runner
WORKDIR /home/app
COPY --from=builder /work/simple-restcontroller/build/libs/simple-restcontroller-0.0.1-SNAPSHOT.jar /home/app/
ENTRYPOINT ["java", "-jar", "./simple-restcontroller-0.0.1-SNAPSHOT.jar"]
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2. Manifest File ( kind: Deployment )
-
Command
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# 生成する場合
kubectl apply -f deployment.yaml
kubectl expose deployment simple-restcontroller --type=LoadBalancer --name=my-service
# deployment と service の内容確認
## deployment
### 概要
kubectl get deployments simple-restcontroller
### 詳細
kubectl describe deployments simple-restcontroller
## service
### 概要
kubectl get services my-service
### 詳細
kubectl describe services my-service
# スケールする場合
kubectl scale --replicas=3 -f deployment.yaml
# 削除する場合
kubectl delete services my-service
kubectl delete deployment poc1-app
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-
deployment.yaml
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apiVersion: apps/v1
kind: Deployment
metadata:
name: simple-restcontroller
spec:
replicas: 1
selector:
matchLabels:
name: simple-restcontroller
template:
metadata:
labels:
name: simple-restcontroller
track: stable
version: 1.0.0
spec:
containers:
- name: nginx
image: nginx:1.14.2
ports:
- containerPort: 80
- name: simple-restcontroller
image: test-image:latest
imagePullPolicy: IfNotPresent
resources:
limits:
cpu: "1"
memory: "1Gi"
ports:
- name: http
containerPort: 8080
readinessProbe:
httpGet:
path: /readiness
port: 81
scheme: HTTP
initialDelaySeconds: 5
timeoutSeconds: 1
livenessProbe:
httpGet:
path: /healthz
port: 81
scheme: HTTP
initialDelaySeconds: 5
periodSeconds: 15
timeoutSeconds: 5
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3. In addition - Execution Result - Sample Multi-Stage Builds
Multi-Stage Buildsにより、約80秒ほどビルドが早くなりました。
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[username@instance-1 work]$ sudo DOCKER_BUILDKIT=1 docker build --no-cache -t demo .
[+] Building 238.2s (15/15) FINISHED
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 509B 0.0s
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> resolve image config for docker.io/docker/dockerfile:experimental 1.0s
=> docker-image://docker.io/docker/dockerfile:experimental@sha256:de85b2f3a3e8a2f7fe48e8e84a65f6fdd5cd5183afa6412ff 1.0s
=> => resolve docker.io/docker/dockerfile:experimental@sha256:de85b2f3a3e8a2f7fe48e8e84a65f6fdd5cd5183afa6412fff9ca 0.0s
=> => sha256:de85b2f3a3e8a2f7fe48e8e84a65f6fdd5cd5183afa6412fff9caa6871649c44 1.69kB / 1.69kB 0.0s
=> => sha256:8c69d118cfcd040a222bea7f7d57c6156faa938cb61b47657cd65343babc3664 521B / 521B 0.0s
=> => sha256:08fb2b2ca3d58e19d791e73dea16126df37608115532e748d63525688df457a5 897B / 897B 0.0s
=> => sha256:61261561661960014533790f5d6c42f5b88362db7e005f35248c20f075900a61 8.88MB / 8.88MB 0.3s
=> => extracting sha256:61261561661960014533790f5d6c42f5b88362db7e005f35248c20f075900a61 0.6s
=> [internal] load metadata for docker.io/library/openjdk:11-jre 0.4s
=> [internal] load metadata for docker.io/library/openjdk:11-jdk
=> [internal] load build context 71.9s
=> => transferring context: 1.88GB 71.7s
=> [runner 1/3] FROM docker.io/library/openjdk:11-jre@sha256:e76cbcd78500cb019f25af60bac7e85d9b2108467379129a22445 22.6s
=> => resolve docker.io/library/openjdk:11-jre@sha256:e76cbcd78500cb019f25af60bac7e85d9b2108467379129a22445d77011cd 0.0s
=> => sha256:8c7c4070295266d562c41ebe5379eaba7d76a4d9f47bf48d067aaa73cbc0ad35 8.65kB / 8.65kB 0.0s
=> => sha256:989e6b19a265d6b8b7934e7ddd7dc07f6e2fc945b3a28dda9b8aecb12cdb30e0 7.81MB / 7.81MB 0.4s
=> => sha256:e76cbcd78500cb019f25af60bac7e85d9b2108467379129a22445d77011cdaa0 1.04kB / 1.04kB 0.0s
=> => sha256:7c462965a1cd98938b2956c1878a297f2edbd73323b3575699711e0685c377d3 1.58kB / 1.58kB 0.0s
=> => sha256:e9afc4f90ab09248d75c8081b6dfba749a7f7efdac704ced7e0ceb506e02fa4a 50.39MB / 50.39MB 1.4s
=> => sha256:af14b6c2f8785723bceb5964c5dec1f0489b7750e9d4ec671e49bfba15d80a39 10.00MB / 10.00MB 0.4s
=> => sha256:68a79816c3e1e5cdd064948818bbd2dbf38783031aeca1474a9a9b50c2d8e5e8 5.53MB / 5.53MB 2.2s
=> => sha256:e440f69a0a762646d5aed47652c8a122f43b415f52b87a90eb14690e1426fd0f 210B / 210B 2.2s
=> => extracting sha256:e9afc4f90ab09248d75c8081b6dfba749a7f7efdac704ced7e0ceb506e02fa4a 233.8s
=> => sha256:837b533a935df78a47a09e44fd06c8ec7af6624ef1eec0d69e8d7d208efe2434 41.94MB / 41.94MB 3.5s
=> => extracting sha256:af14b6c2f8785723bceb5964c5dec1f0489b7750e9d4ec671e49bfba15d80a39 224.6s
=> => extracting sha256:68a79816c3e1e5cdd064948818bbd2dbf38783031aeca1474a9a9b50c2d8e5e8 1.6s
=> => extracting sha256:e440f69a0a762646d5aed47652c8a122f43b415f52b87a90eb14690e1426fd0f 0.0s
=> => extracting sha256:837b533a935df78a47a09e44fd06c8ec7af6624ef1eec0d69e8d7d208efe2434 6.9s
=> [builder 1/4] FROM docker.io/library/openjdk:11-jdk@sha256:43b4a74e4c7698e71ab00cfbbbbafffadc0d49f2c1e343234050 44.4s
=> => resolve docker.io/library/openjdk:11-jdk@sha256:43b4a74e4c7698e71ab00cfbbbbafffadc0d49f2c1e3432340500a5ec233c 0.0s
=> => sha256:29fc9543dead0f8c1b25afa026e4a3ddafa38c5c353ee407edcea62a95f1f2e4 1.79kB / 1.79kB 0.0s
=> => sha256:e9afc4f90ab09248d75c8081b6dfba749a7f7efdac704ced7e0ceb506e02fa4a 50.39MB / 50.39MB 235.4s
=> => sha256:43b4a74e4c7698e71ab00cfbbbbafffadc0d49f2c1e3432340500a5ec233cc7c 1.04kB / 1.04kB 0.0s
=> => sha256:fcfdce4526dfd3cd24f4922025a010c01d9cc4345dd8521cf03b92a98df19bc3 7.01kB / 7.01kB 0.0s
=> => sha256:989e6b19a265d6b8b7934e7ddd7dc07f6e2fc945b3a28dda9b8aecb12cdb30e0 7.81MB / 7.81MB 235.4s
=> => sha256:af14b6c2f8785723bceb5964c5dec1f0489b7750e9d4ec671e49bfba15d80a39 10.00MB / 10.00MB 235.4s
=> => sha256:5573c4b3094956931fd68c310ae92c9eb1a787f0c77ac2730be9d16cce172d5e 51.83MB / 51.83MB 2.0s
=> => sha256:fb1a405f128d35ffb78464f5ac9f15e721e0d205b94360e151d60f32f9b38111 5.28MB / 5.28MB 1.4s
=> => extracting sha256:e9afc4f90ab09248d75c8081b6dfba749a7f7efdac704ced7e0ceb506e02fa4a 7.6s
=> => sha256:cf63ebed11424864a6f71681347d31876110d84dfb087460179f9b66a658df0a 196.21MB / 196.21MB 6.9s
=> => sha256:612a9f566fdc082f9d43f642791723e34bab94c243b34a965b4602d416ee7a72 211B / 211B 2.0s
=> => extracting sha256:989e6b19a265d6b8b7934e7ddd7dc07f6e2fc945b3a28dda9b8aecb12cdb30e0 1.3s
=> => extracting sha256:af14b6c2f8785723bceb5964c5dec1f0489b7750e9d4ec671e49bfba15d80a39 0.7s
=> => extracting sha256:5573c4b3094956931fd68c310ae92c9eb1a787f0c77ac2730be9d16cce172d5e 9.8s
=> => extracting sha256:fb1a405f128d35ffb78464f5ac9f15e721e0d205b94360e151d60f32f9b38111 0.6s
=> => extracting sha256:612a9f566fdc082f9d43f642791723e34bab94c243b34a965b4602d416ee7a72 0.0s
=> => extracting sha256:cf63ebed11424864a6f71681347d31876110d84dfb087460179f9b66a658df0a 8.8s
=> [runner 2/3] WORKDIR /home/app 12.8s
=> [builder 2/4] ADD . /work 45.6s
=> [builder 3/4] WORKDIR /work/simple-restcontroller 0.0s
=> [builder 4/4] RUN --mount=type=cache,target=/root/.gradle ./gradlew clean build 117.0s
=> [runner 3/3] COPY --from=builder /work/simple-restcontroller/build/libs/simple-restcontroller-0.0.1-SNAPSHOT.jar 0.3s
=> exporting to image 0.1s
=> => exporting layers 0.1s
=> => writing image sha256:e19d9e89988f5ebed7aa0e99933ca117243f766ec1aa96aa23c21a67bc3ee84a 0.0s
=> => naming to docker.io/library/demo 0.0s
[username@instance-1 work]$ sudo DOCKER_BUILDKIT=1 docker build --no-cache -t demo .
[+] Building 158.9s (15/15) FINISHED
=> [internal] load build definition from Dockerfile 0.1s
=> => transferring dockerfile: 97B 0.0s
=> [internal] load .dockerignore 0.1s
=> => transferring context: 2B 0.0s
=> resolve image config for docker.io/docker/dockerfile:experimental 0.5s
=> CACHED docker-image://docker.io/docker/dockerfile:experimental@sha256:de85b2f3a3e8a2f7fe48e8e84a65f6fdd5cd5183af 0.0s
=> [internal] load metadata for docker.io/library/openjdk:11-jre 0.2s
=> [internal] load metadata for docker.io/library/openjdk:11-jdk 0.2s
=> [internal] load build context 5.1s
=> => transferring context: 2.34MB 5.0s
=> [runner 1/3] FROM docker.io/library/openjdk:11-jre@sha256:e76cbcd78500cb019f25af60bac7e85d9b2108467379129a22445d 0.0s
=> CACHED [builder 1/4] FROM docker.io/library/openjdk:11-jdk@sha256:43b4a74e4c7698e71ab00cfbbbbafffadc0d49f2c1e343 0.0s
=> CACHED [runner 2/3] WORKDIR /home/app 0.0s
=> [builder 2/4] ADD . /work 45.3s
=> [builder 3/4] WORKDIR /work/simple-restcontroller 0.0s
=> [builder 4/4] RUN --mount=type=cache,target=/root/.gradle ./gradlew clean build 106.4s
=> [runner 3/3] COPY --from=builder /work/simple-restcontroller/build/libs/simple-restcontroller-0.0.1-SNAPSHOT.jar 0.3s
=> exporting to image 0.2s
=> => exporting layers 0.1s
=> => writing image sha256:04cc41f59890b6ea317181a516c2257efc78b0e127534bcb29b49ec530a68a8e 0.0s
=> => naming to docker.io/library/demo 0.0s
[username@instance-1 work]$ docker builder prune
WARNING! This will remove all dangling build cache. Are you sure you want to continue? [y/N] u
Total reclaimed space: 0B
[username@instance-1 work]$ docker builder prune
WARNING! This will remove all dangling build cache. Are you sure you want to continue? [y/N] y
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.40/build/prune?filters=&keep-storage=0: dial unix /var/run/docker.sock: connect: permission denied
[username@instance-1 work]$ sudo docker builder prune
WARNING! This will remove all dangling build cache. Are you sure you want to continue? [y/N] y
Deleted build cache objects:
yxrjv1y47b3y0hm3x6owx189g
qu1o8wc8j1bv1nnjgzeae2zgj
aya90ygi62mlj07avq15squq6
jsyugg6rs20g7jffgtcfjecke
f5tujft67zgtyuox9c26ik7iu
r88y39mqt5wsebtfuy5ar6div
3vumssfvndd90oyvilyxp4qnu
imvymyhj17q2sqsllth0qndor
q6pedljpsshcspdq2fsyt6ocq
0yk4ab9ls61d50f4gtokykg6y
sha256:c9ef80d5f34210a78113974f64ce32386f5c28a6cf538c398daf76052d2abf99
sha256:e313f84ea12ee09cf103147b76bf2fb372d40ccfed273e2389e96a56fb31e11e
sha256:15239410c554dafb7f891f0d51def4992ead6d7307b4f224241d1c685b7ce493
sha256:f863ffb247f4c239aeccf155b7c0d92e35403aed0c825690f6739a89a5901a7c
Total reclaimed space: 6.424GB
[username@instance-1 work]$ sudo DOCKER_BUILDKIT=1 docker build --no-cache -t demo .
[+] Building 221.4s (15/15) FINISHED
=> [internal] load build definition from Dockerfile 0.1s
=> => transferring dockerfile: 509B 0.0s
=> [internal] load .dockerignore 0.1s
=> => transferring context: 2B 0.0s
=> resolve image config for docker.io/docker/dockerfile:experimental 0.4s
=> CACHED docker-image://docker.io/docker/dockerfile:experimental@sha256:de85b2f3a3e8a2f7fe48e8e84a65f6fdd5cd5183af 0.0s
=> [internal] load metadata for docker.io/library/openjdk:11-jre 0.2s
=> [internal] load metadata for docker.io/library/openjdk:11-jdk 0.2s
=> [internal] load build context 61.5s
=> => transferring context: 1.88GB 61.4s
=> [runner 1/3] FROM docker.io/library/openjdk:11-jre@sha256:e76cbcd78500cb019f25af60bac7e85d9b2108467379129a22445d 0.0s
=> [builder 1/4] FROM docker.io/library/openjdk:11-jdk@sha256:43b4a74e4c7698e71ab00cfbbbbafffadc0d49f2c1e343234050 29.4s
=> => resolve docker.io/library/openjdk:11-jdk@sha256:43b4a74e4c7698e71ab00cfbbbbafffadc0d49f2c1e3432340500a5ec233c 0.0s
=> => sha256:43b4a74e4c7698e71ab00cfbbbbafffadc0d49f2c1e3432340500a5ec233cc7c 1.04kB / 1.04kB 0.0s
=> => sha256:29fc9543dead0f8c1b25afa026e4a3ddafa38c5c353ee407edcea62a95f1f2e4 1.79kB / 1.79kB 0.0s
=> => sha256:fcfdce4526dfd3cd24f4922025a010c01d9cc4345dd8521cf03b92a98df19bc3 7.01kB / 7.01kB 0.0s
=> => sha256:612a9f566fdc082f9d43f642791723e34bab94c243b34a965b4602d416ee7a72 211B / 211B 0.3s
=> => sha256:5573c4b3094956931fd68c310ae92c9eb1a787f0c77ac2730be9d16cce172d5e 51.83MB / 51.83MB 1.7s
=> => sha256:fb1a405f128d35ffb78464f5ac9f15e721e0d205b94360e151d60f32f9b38111 5.28MB / 5.28MB 0.4s
=> => sha256:cf63ebed11424864a6f71681347d31876110d84dfb087460179f9b66a658df0a 196.21MB / 196.21MB 4.5s
=> => extracting sha256:5573c4b3094956931fd68c310ae92c9eb1a787f0c77ac2730be9d16cce172d5e 4.4s
=> => extracting sha256:fb1a405f128d35ffb78464f5ac9f15e721e0d205b94360e151d60f32f9b38111 0.6s
=> => extracting sha256:612a9f566fdc082f9d43f642791723e34bab94c243b34a965b4602d416ee7a72 0.0s
=> => extracting sha256:cf63ebed11424864a6f71681347d31876110d84dfb087460179f9b66a658df0a 7.1s
=> CACHED [runner 2/3] WORKDIR /home/app 0.0s
=> [builder 2/4] ADD . /work 50.3s
=> [builder 3/4] WORKDIR /work/simple-restcontroller 0.0s
=> [builder 4/4] RUN --mount=type=cache,target=/root/.gradle ./gradlew clean build 107.6s
=> [runner 3/3] COPY --from=builder /work/simple-restcontroller/build/libs/simple-restcontroller-0.0.1-SNAPSHOT.jar 0.3s
=> exporting to image 0.2s
=> => exporting layers 0.1s
=> => writing image sha256:d9e6b95edf00e2fcd24792461a08f1964c3bfc2f433f9d518ca9645c3cb886f8 0.0s
=> => naming to docker.io/library/demo
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4. Refference