Build OpenWrt images in a Docker container. This is sometimes necessary when building OpenWrt on the host system fails, e.g. when some dependency is too new. The docker image is based on Debian 10 (Buster).
Build tested:
- OpenWrt-19.07.6
- Docker installed
- running Docker daemon
- build Docker image:
git clone git@bitbucket.org:steffenscheib/docker-openwrt_builder.git
cd docker-openwrt_builder
docker build -t openwrt_builder .
Now the docker image is available. These steps only need to be done once. By default UID and GID are mapped to 1003 - check ARG statements in the Dockerfile.
Create a build folder and link it into a new docker container:
docker run --name build.wrt3200acm --hostname build.pve.ext.scheib.me -v /build/openwrt-source/:/home/builder -it openwrt_builder /bin/bash
In the container console, enter:
git clone https://git.openwrt.org/openwrt/openwrt.git
cd openwrt
./scripts/feeds update -a
./scripts/feeds install -a
make menuconfig
make download
make -j"$(nproc)"
The docker container can (obviously) be re-used everytime:
root@build:/home/steffen# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c72a2addcc00 openwrt_builder "/bin/bash" 30 seconds ago Exited (127) 18 seconds ago build.wrt3200acm
root@build:/home/steffen# docker start c72a2addcc00
c72a2addcc00
root@build:/home/steffen# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
c72a2addcc00 openwrt_builder "/bin/bash" 38 seconds ago Up 2 seconds build.wrt3200acm
root@build:/home/steffen# docker exec -it c72a2addcc00 /bin/bash
builder@build:~$ pwd
/home/builder
builder@build:~$ ls -la
total 1508
drwxr-xr-x 18 builder builder 4096 Jan 22 10:25 .
drwxr-xr-x 1 root root 21 Jan 22 10:42 ..
-rw------- 1 builder builder 135 Jan 22 10:55 .bash_history
-rw-r--r-- 1 builder builder 280557 Jan 21 20:02 .config
-rw-r--r-- 1 builder builder 280546 Jan 21 19:27 .config.old
-rw-r--r-- 1 builder builder 280937 Jan 21 12:28 .config_customized_busybox
-rw-r--r-- 1 builder builder 247186 Jan 21 11:50 .config_final
-rw-r--r-- 1 builder builder 290764 Jan 20 22:03 .config_wrt3200acm
drwxr-xr-x 8 builder builder 181 Jan 20 17:51 .git
-rw-r--r-- 1 builder builder 8 Jan 20 16:54 .gitattributes
drwxr-xr-x 2 builder builder 57 Jan 20 16:54 .github
-rw-r--r-- 1 builder builder 261 Jan 20 16:58 .gitignore
-rw-r--r-- 1 builder builder 179 Jan 20 16:54 BSDmakefile
-rw-r--r-- 1 builder builder 576 Jan 20 16:54 Config.in
-rw-r--r-- 1 builder builder 17992 Jan 20 16:58 LICENSE
-rw-r--r-- 1 builder builder 3740 Jan 20 16:58 Makefile
-rw-r--r-- 1 builder builder 1295 Jan 20 16:58 README
drwxr-xr-x 4 builder builder 37 Jan 20 18:05 bin
drwxr-xr-x 5 builder builder 94 Jan 21 20:44 build_dir
drwxr-xr-x 2 builder builder 100 Jan 20 16:58 config
drwxr-xr-x 2 builder builder 12288 Jan 21 20:16 dl
drwxr-xr-x 12 builder builder 4096 Jan 20 17:00 feeds
-rw-r--r-- 1 builder builder 502 Jan 20 16:58 feeds.conf.default
drwxr-xr-x 6 builder builder 55 Jan 21 19:18 files
drwxr-xr-x 3 builder builder 4096 Jan 20 16:58 include
-rw-r--r-- 1 builder builder 176 Jan 20 18:16 key-build
-rw-r--r-- 1 builder builder 92 Jan 20 18:16 key-build.pub
-rw-r--r-- 1 builder builder 356 Jan 20 18:16 key-build.ucert
-rw-r--r-- 1 builder builder 260 Jan 20 18:16 key-build.ucert.revoke
drwxr-xr-x 12 builder builder 162 Jan 20 17:00 package
-rw-r--r-- 1 builder builder 13370 Jan 20 16:58 rules.mk
drwxr-xr-x 4 builder builder 4096 Jan 20 16:58 scripts
drwxr-xr-x 5 builder builder 94 Jan 21 20:44 staging_dir
drwxr-xr-x 6 builder builder 100 Jan 20 16:58 target
drwxr-xr-x 4 builder builder 16384 Jan 21 20:22 tmp
drwxr-xr-x 12 builder builder 203 Jan 20 16:58 toolchain
drwxr-xr-x 61 builder builder 4096 Jan 20 16:58 tools
-rw-r--r-- 1 builder builder 18 Jan 20 16:58 version
-rw-r--r-- 1 builder builder 11 Jan 20 16:58 version.date
builder@build:~$
After the build, the images will be inside /build/openwrt/bin/target/.
Forked and modified from: https://github.com/mwarning/docker-openwrt-builder