I have a Java project that I’m writing in VS Code without Java extension and I need to run it on Docker.

I wrote a Dockerfile and ran on Docker but it returns me an error:

*------
 > [3/4] RUN javac CalculatorTest.java:
#6 0.436 /bin/sh: 1: javac: not found
------
executor failed running [/bin/sh -c javac CalculatorTest.java]: exit code: 127

This is my Dockerfile:

FROM openjdk:11-jre-slim 
WORKDIR /app 
RUN javac CalculatorTest.java 
COPY . . 
CMD ["java","CalculatorTest"]