/bin/sh: pip3: not found error on alpine 3.12

[prabhb1]

Hello team!

We are getting a new issue after moving from alpine version 3.11 to 3.12(latest). Please find the docker image snippet and where the error occurs:

RUN apk add --no-cache python3 openssl ca-certificates git openssh sshpass
&& apk --update add --virtual build-dependencies python3-dev libffi-dev openssl-dev build-base
&& pip3 install --upgrade pip cffi

Stacktrace:
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
(1/24) Installing ca-certificates (20191127-r2)
(2/24) Installing nghttp2-libs (1.40.0-r0)
(3/24) Installing libcurl (7.69.1-r0)
(4/24) Installing expat (2.2.9-r1)
(5/24) Installing pcre2 (10.35-r0)
(6/24) Installing git (2.26.2-r0)
(7/24) Installing openssh-keygen (8.3_p1-r0)
(8/24) Installing ncurses-terminfo-base (6.2_p20200523-r0)
(9/24) Installing ncurses-libs (6.2_p20200523-r0)
(10/24) Installing libedit (20191231.3.1-r0)
(11/24) Installing openssh-client (8.3_p1-r0)
(12/24) Installing openssh-sftp-server (8.3_p1-r0)
(13/24) Installing openssh-server-common (8.3_p1-r0)
(14/24) Installing openssh-server (8.3_p1-r0)
(15/24) Installing openssh (8.3_p1-r0)
(16/24) Installing openssl (1.1.1g-r0)
(17/24) Installing libbz2 (1.0.8-r1)
(18/24) Installing libffi (3.3-r2)
(19/24) Installing gdbm (1.13-r1)
(20/24) Installing xz-libs (5.2.5-r0)
(21/24) Installing readline (8.0.4-r0)
(22/24) Installing sqlite-libs (3.32.1-r0)
(23/24) Installing python3 (3.8.3-r0)
(24/24) Installing sshpass (1.06-r0)
Executing busybox-1.31.1-r16.trigger
Executing ca-certificates-20191127-r2.trigger
OK: 75 MiB in 38 packages
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/main/x86_64/APKINDEX.tar.gz
fetch http://dl-cdn.alpinelinux.org/alpine/v3.12/community/x86_64/APKINDEX.tar.gz
(1/26) Installing pkgconf (1.7.2-r0)
(2/26) Installing python3-dev (3.8.3-r0)
(3/26) Installing linux-headers (5.4.5-r1)
(4/26) Installing libffi-dev (3.3-r2)
(5/26) Installing openssl-dev (1.1.1g-r0)
(6/26) Installing libgcc (9.3.0-r2)
(7/26) Installing libstdc++ (9.3.0-r2)
(8/26) Installing binutils (2.34-r1)
(9/26) Installing libmagic (5.38-r0)
(10/26) Installing file (5.38-r0)
(11/26) Installing gmp (6.2.0-r0)
(12/26) Installing isl (0.18-r0)
(13/26) Installing libgomp (9.3.0-r2)
(14/26) Installing libatomic (9.3.0-r2)
(15/26) Installing libgphobos (9.3.0-r2)
(16/26) Installing mpfr4 (4.0.2-r4)
(17/26) Installing mpc1 (1.1.0-r1)
(18/26) Installing gcc (9.3.0-r2)
(19/26) Installing musl-dev (1.1.24-r8)
(20/26) Installing libc-dev (0.7.2-r3)
(21/26) Installing g++ (9.3.0-r2)
(22/26) Installing make (4.3-r0)
(23/26) Installing fortify-headers (1.1-r0)
(24/26) Installing patch (2.7.6-r6)
(25/26) Installing build-base (0.5-r2)
(26/26) Installing build-dependencies (20200601.084206)
Executing busybox-1.31.1-r16.trigger
OK: 330 MiB in 64 packages
/bin/sh: pip3: not found

Error:
/bin/sh: pip3: not found
ERROR: Job failed: exit code 127

We would love to hear if there are any changes that python3-dev or python related in 3.12 version which is affecting the pip3 not found error.

Note: This was working fine in the version 3.11

Workaround: We added the py-pip library and is working as expected without the above-mentioned error.

[ncopa]

You can also do: apk add cmd:pip3 which will pull in whatever package that provides pip3 command. That way you don't need replace py-pip with something else (py3-pip?) if it changes in the future.

[prabhb1]

@ncopa: Thanks for the suggestion, we will update the pip3 command externally.
I just wanted to know as to what is the RCA for this issue, as in were there any changes wrt Python or python-dev libraries? Thanks in advance for the response.

[magiccrafter]

@ncopa: Thanks for the suggestion, we will update the pip3 command externally.
I just wanted to know as to what is the RCA for this issue, as in were there any changes wrt Python or python-dev libraries? Thanks in advance for the response.

pip3 doesn't come with apk add python3 anymore. The issue is not related to alipne image.

[praveensanpada]

This is my first step and i am getting this error

from alpine:latest

RUN apk add --no-cache python3-dev
&& pip3 install --upgrade pip

/bin/sh: pip3: not found
The command '/bin/sh -c apk add --no-cache python3-dev && pip3 install --upgrade pip setuptools' returned a non-zero code: 127