youtube-dl - '/bin/sh: pip3: not found' when building image

[ghost]

Sending build context to Docker daemon  3.072kB
Step 1/7 : FROM alpine
 ---> a24bb4013296
Step 2/7 : MAINTAINER kev <[email protected]>
 ---> Using cache
 ---> 09bb3fbeb8fb
Step 3/7 : RUN set -xe     && apk add --no-cache ca-certificates                           ffmpeg                           openssl                           python3                           aria2     && pip3 install youtube-dl
 ---> Running in aaf7363fbe80
+ apk add --no-cache ca-certificates ffmpeg openssl python3 aria2
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
(1/59) Installing ca-certificates (20191127-r4)
(2/59) Installing c-ares (1.16.1-r0)
(3/59) Installing expat (2.2.9-r1)
(4/59) Installing libgcc (9.3.0-r2)
(5/59) Installing gmp (6.2.0-r0)
(6/59) Installing nettle (3.5.1-r1)
(7/59) Installing libffi (3.3-r2)
(8/59) Installing p11-kit (0.23.20-r5)
(9/59) Installing libtasn1 (4.16.0-r1)
(10/59) Installing libunistring (0.9.10-r0)
(11/59) Installing gnutls (3.6.14-r0)
(12/59) Installing sqlite-libs (3.32.1-r0)
(13/59) Installing libstdc++ (9.3.0-r2)
(14/59) Installing aria2 (1.35.0-r0)
(15/59) Installing sdl2 (2.0.12-r1)
(16/59) Installing libxau (1.0.9-r0)
(17/59) Installing libbsd (0.10.0-r0)
(18/59) Installing libxdmcp (1.1.3-r0)
(19/59) Installing libxcb (1.14-r1)
(20/59) Installing libx11 (1.6.9-r0)
(21/59) Installing aom-libs (1.0.0-r1)
(22/59) Installing alsa-lib (1.2.2-r0)
(23/59) Installing brotli-libs (1.0.7-r5)
(24/59) Installing libbz2 (1.0.8-r1)
(25/59) Installing libpng (1.6.37-r1)
(26/59) Installing freetype (2.10.2-r0)
(27/59) Installing libuuid (2.35.2-r0)
(28/59) Installing fontconfig (2.13.1-r2)
(29/59) Installing fribidi (1.0.9-r0)
(30/59) Installing libass (0.14.0-r0)
(31/59) Installing libdav1d (0.7.0-r0)
(32/59) Installing ncurses-terminfo-base (6.2_p20200523-r0)
(33/59) Installing ncurses-libs (6.2_p20200523-r0)
(34/59) Installing lame (3.100-r0)
(35/59) Installing opus (1.3.1-r0)
(36/59) Installing libssh (0.9.4-r0)
(37/59) Installing libogg (1.3.4-r0)
(38/59) Installing libtheora (1.1.1-r14)
(39/59) Installing libjpeg-turbo (2.0.4-r1)
(40/59) Installing v4l-utils-libs (1.20.0-r0)
(41/59) Installing libxext (1.3.4-r0)
(42/59) Installing libxfixes (5.0.3-r2)
(43/59) Installing libpciaccess (0.16-r0)
(44/59) Installing libdrm (2.4.102-r0)
(45/59) Installing wayland-libs-client (1.18.0-r4)
(46/59) Installing libva (2.7.1-r0)
(47/59) Installing libvdpau (1.4-r0)
(48/59) Installing libvorbis (1.3.6-r2)
(49/59) Installing libvpx (1.8.2-r0)
(50/59) Installing x264-libs (20191119-r1)
(51/59) Installing x265-libs (3.3-r1)
(52/59) Installing xvidcore (1.3.7-r1)
(53/59) Installing ffmpeg-libs (4.3-r0)
(54/59) Installing ffmpeg (4.3-r0)
(55/59) Installing openssl (1.1.1g-r0)
(56/59) Installing gdbm (1.13-r1)
(57/59) Installing xz-libs (5.2.5-r0)
(58/59) Installing readline (8.0.4-r0)
(59/59) Installing python3 (3.8.3-r0)
Executing busybox-1.31.1-r16.trigger
Executing ca-certificates-20191127-r4.trigger
OK: 113 MiB in 73 packages
+ pip3 install youtube-dl
/bin/sh: pip3: not found
The command '/bin/sh -c set -xe     && apk add --no-cache ca-certificates                           ffmpeg                           openssl                           python3                           aria2     && pip3 install youtube-dl' returned a non-zero code: 127

[hugokernel]

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