I don't know what I'm getting this error when I dockerized my spring-boot application
this is my Dockerfile enter image description here
CodePudding user response：
In your spring boot application, from what I can see your BookingController is missing.
Make sure you have the file present and build your image accordingly.
For your Docker file try to change "add" to "ADD" .
It seems your target files are not been copied into the image built.
CodePudding user response：
First, I wonder is your application working on your IDE?
Second, I think you make sure to build and package. It is not sure to exists a jar file in your target folder. You always have to build and check by yourself.
Make the build process automatic.
How about using this Dockerfile?
FROM maven:3.8.6-openjdk-18-slim as MAVEN_BUILD
WORKDIR /build
COPY pom.xml .
RUN mvn dependency:go-offline
COPY src ./src
RUN mvn package -Dmaven.test.skip=true
FROM openjdk:18-alpine
WORKDIR /app
ARG JAR_FILE=*.jar
COPY --from=MAVEN_BUILD /build/target/${JAR_FILE} ./app.jar
EXPOSE 8080
CMD ["java", "-jar", "app.jar"]
If maven or openjdk version not matched, check this site.