Part3

Part1/Dockerfile

@@ -1,8 +0,0 @@
-FROM node:16.19
-EXPOSE 8080
-WORKDIR /usr/src/app
-COPY package*.json ./
-COPY . .
-RUN npm install && npm run build
-RUN npm install -g serve
-CMD ["serve", "-s", "-l", "8080", "build"]

Part3/Exercise01/submission.txt

@@ -0,0 +1 @@
+https://github.com/ArcticCoder/github-actions-exercise

Part3/Exercise02/link.txt

@@ -0,0 +1 @@
+https://github.com/ArcticCoder/docker-cloud-deploy-exercise

Part3/Exercise03/builder.sh

@@ -0,0 +1,5 @@
+#!/bin/sh
+git clone https://github.com/$1.git ./repo
+cd ./repo
+docker build . -t $2
+docker push $2

Part3/Exercise04/Dockerfile

@@ -0,0 +1,5 @@
+FROM docker:23.0.1-cli
+WORKDIR /usr/src/app
+COPY ./builder.sh ./builder.sh
+RUN apk add git
+ENTRYPOINT ["/usr/src/app/builder.sh"]

Part3/Exercise04/builder.sh

@@ -0,0 +1,6 @@
+#!/bin/sh
+git clone https://github.com/$1.git ./repo
+cd ./repo
+docker build . -t $2
+docker login -u $DOCKER_USER -p $DOCKER_PWD
+docker push $2

Part3/Exercise05/Dockerfile_back

@@ -0,0 +1,9 @@
+FROM golang:1.16
+EXPOSE 8080
+WORKDIR /usr/src/app
+COPY . .
+ENV REQUEST_ORIGIN=http://devops:5000
+RUN go build
+RUN useradd -m appuser
+USER appuser
+CMD ["./server"] 

Part3/Exercise05/Dockerfile_front

@@ -0,0 +1,11 @@
+FROM node:16.19
+EXPOSE 5000
+WORKDIR /usr/src/app
+COPY package*.json ./
+COPY . .
+ENV REACT_APP_BACKEND_URL=http://devops:8080
+RUN npm install && npm run build
+RUN npm install -g serve
+RUN useradd -m appuser
+USER appuser
+CMD ["serve", "-s", "-l", "5000", "build"]

Part3/Exercise06/sizes.txt

@@ -0,0 +1,9 @@
+Before:
+Front - 1.26GB
+Back - 1.07GB
+
+After:
+Front - 1.26GB
+Back - 1.07GB 
+
+No visible difference at this scale.

Part3/Exercise07/sizes.txt

@@ -0,0 +1,7 @@
+Before:
+Front - 1.26GB
+Back - 1.07GB
+
+After:
+Front - 463MB
+Back - 447MB

Part3/Exercise08/Dockerfile

@@ -0,0 +1,15 @@
+FROM node:16.19-alpine3.16 as build-stage
+WORKDIR /usr/src/app
+COPY package*.json ./
+COPY . .
+ENV REACT_APP_BACKEND_URL=http://devops:8080
+RUN npm install && npm run build
+
+FROM node:16.19-alpine3.16
+EXPOSE 5000
+WORKDIR /usr/src/app
+COPY --from=build-stage /usr/src/app/build /usr/src/app/build
+RUN npm install -g serve && \
+	adduser -D appuser 
+USER appuser
+CMD ["serve", "-s", "-l", "5000", "build"]

Part3/Exercise08/sizes.txt

@@ -0,0 +1,5 @@
+Before:
+Front - 463MB
+
+After:
+Front - 127MB

Part3/Exercise09/Dockerfile

@@ -0,0 +1,12 @@
+FROM golang:1.16.15-alpine3.15 as build-stage
+WORKDIR /usr/src/app
+COPY . .
+RUN adduser -D appuser && CGO_ENABLED=0 go build
+
+FROM scratch
+EXPOSE 8080
+ENV REQUEST_ORIGIN=http://devops:5000
+COPY --from=build-stage /usr/src/app/server /
+COPY --from=build-stage /etc/passwd /etc/passwd
+USER appuser
+CMD ["/server"]

Part3/Exercise09/sizes.txt

@@ -0,0 +1,5 @@
+Before:
+Back - 447MB
+
+After:
+Back - 18MB

Part3/Exercise10/Dockerfile

@@ -0,0 +1,16 @@
+# Using the -slim images instead of alpine, because the alpine images threw error:
+# library initialization failed - unable to allocate file descriptor table - out of memory
+# and I didn't want to submit something that required modifying Docker settings
+FROM openjdk:8-jdk-slim as build
+WORKDIR /usr/src/app
+COPY pom.xml ./
+COPY . .
+RUN ./mvnw package
+
+FROM openjdk:8-jre-slim
+EXPOSE 8080
+WORKDIR /usr/src/app
+COPY --from=build /usr/src/app/target/docker-example-1.1.3.jar .
+RUN useradd -m appuser
+USER appuser
+CMD ["java", "-jar", "./docker-example-1.1.3.jar"]

Part3/Exercise10/sizes.txt

@@ -0,0 +1,2 @@
+Before: 435MB
+After: 213MB