"docker build": cannot find 'make' even though already installed-CodePudding

I'm trying to create a docker image on MacOS using the below command. Note docker build cannot run any command, I tried it with npm --version, and it couldn't find npm either.

% docker build -<<EOF 
# syntax=docker/dockerfile:1
FROM ubuntu:20.04
COPY . /app
RUN make /app
CMD node /app/index.js
EOF

Here's the error message I'm getting:

[output clipped...]
=> ERROR [3/3] RUN make /app                                                                                                
------
> [3/3] RUN make /app:
#11 0.200 /bin/sh: 1: make: not found
------
executor failed running [/bin/sh -c make /app]: exit code: 127

However, make is already installed, via xcode-select:

% /bin/sh -c make /app
make: *** No targets specified and no makefile found.  Stop.

Can anyone help me here please? Thanks!

CodePudding user response：

Docker can't use software installed on the host. You need to install make in your Dockerfile like this

% docker build -<<EOF 
# syntax=docker/dockerfile:1
FROM ubuntu:20.04
RUN apt-get update && apt-get install -y build-essential
COPY . /app
RUN make /app
CMD node /app/index.js
EOF