Question posted in 
I’m not really good at network,
I can’t see what changed with the command wget inside when I ran docker build --build-arg https_proxy="http://proxy-fg:8080/" and wget outside from the vm? Any ideas?
[root@LQL-BDDBAS01 pg13]# export https_proxy=http://proxy-fg:8080/
[root@LQL-BDDBAS01 pg13]# wget -O postgresql.tar.bz2 "https://ftp.postgresql.org/pub/source/v13.13/postgresql-13.13.tar.bz2"
--2024-03-25 17:42:23-- https://ftp.postgresql.org/pub/source/v13.13/postgresql-13.13.tar.bz2
Résolution de proxy-fg (proxy-fg)… 10.1.100.254
Connexion à proxy-fg (proxy-fg)|10.1.100.254|:8080… connecté.
requête Proxy transmise, en attente de la réponse… 200 OK
Taille : 21563452 (21M) [application/octet-stream]
Sauvegarde en : « postgresql.tar.bz2 »
postgresql.tar.bz2 100%[=================================================================================================================>] 20,56M 5,79MB/s ds 3,6s
2024-03-25 17:42:28 (5,79 MB/s) — « postgresql.tar.bz2 » sauvegardé [21563452/21563452]
[root@LQL-BDDBAS01 pg13]# docker build --build-arg https_proxy="http://proxy-fg:8080/" --tag postgres13:alpine3.18 .
[+] Building 132.4s (8/12) docker:default
=> [internal] load .dockerignore 0.0s
=> => transferring context: 2B 0.0s
=> [internal] load build definition from Dockerfile 0.0s
=> => transferring dockerfile: 8.07kB 0.0s
=> [internal] load metadata for docker.io/library/alpine:3.18 1.1s
=> [1/8] FROM docker.io/library/alpine:3.18@sha256:11e21d7b981a59554b3f822c49f6e9f57b6068bb74f49c4cd5cc4c663c7e5160 0.0s
=> [internal] load build context 0.0s
=> => transferring context: 102B 0.0s
=> CACHED [2/8] RUN set -eux; addgroup -g 70 -S postgres; adduser -u 70 -S -D -G postgres -H -h /var/lib/postgresql -s /bin/sh postgres; mkdir -p /var/lib/postgresql; chown -R postgres:postgres 0.0s
=> CACHED [3/8] RUN mkdir /docker-entrypoint-initdb.d 0.0s
=> ERROR [4/8] RUN set -eux; wget -O postgresql.tar.bz2 "https://ftp.postgresql.org/pub/source/v13.13/postgresql-13.13.tar.bz2"; echo "8af69c2599047a2ad246567d68ec4131aef116954d8c3e469e9789080b 131.2s
------
> [4/8] RUN set -eux; wget -O postgresql.tar.bz2 "https://ftp.postgresql.org/pub/source/v13.13/postgresql-13.13.tar.bz2"; echo "8af69c2599047a2ad246567d68ec4131aef116954d8c3e469e9789080b37a474 *postgresql.tar.bz2" | sha256sum -c -; mkdir -p /usr/src/postgresql; tar --extract --file postgresql.tar.bz2 --directory /usr/src/postgresql --strip-components 1 ; rm postgresql.tar.bz2; apk add --no-cache --virtual .build-deps llvm15-dev clang15 bison coreutils dpkg-dev dpkg flex g++ gcc krb5-dev libc-dev libedit-dev libxml2-dev libxslt-dev linux-headers make openldap-dev openssl-dev perl-dev perl-ipc-run perl-utils python3-dev tcl-dev util-linux-dev zlib-dev icu-dev ; cd /usr/src/postgresql; awk '$1 == "#define" && $2 == "DEFAULT_PGSOCKET_DIR" && $3 == ""/tmp"" { $3 = ""/var/run/postgresql""; print; next } { print }' src/include/pg_config_manual.h > src/include/pg_config_manual.h.new; grep '/var/run/postgresql' src/include/pg_config_manual.h.new; mv src/include/pg_config_manual.h.new src/include/pg_config_manual.h; gnuArch="$(dpkg-architecture --query DEB_BUILD_GNU_TYPE)"; wget -O config/config.guess 'https://git.savannah.gnu.org/cgit/config.git/plain/config.guess?id=7d3d27baf8107b630586c962c057e22149653deb'; wget -O config/config.sub 'https://git.savannah.gnu.org/cgit/config.git/plain/config.sub?id=7d3d27baf8107b630586c962c057e22149653deb'; export LLVM_CONFIG="/usr/lib/llvm15/bin/llvm-config"; export CLANG=clang-15; ./configure --enable-option-checking=fatal --build="$gnuArch" --enable-integer-datetimes --enable-thread-safety --enable-tap-tests --disable-rpath --with-uuid=e2fs --with-gnu-ld --with-pgport=5432 --with-system-tzdata=/usr/share/zoneinfo --prefix=/usr/local --with-includes=/usr/local/include --with-libraries=/usr/local/lib --with-gssapi --with-ldap --with-tcl --with-perl --with-python --with-openssl --with-libxml --with-libxslt --with-icu --with-llvm ; make -j "$(nproc)" world; make install-world; make -C contrib install; runDeps="$( scanelf --needed --nobanner --format '%n#p' --recursive /usr/local | tr ',' 'n' | sort -u | awk 'system("[ -e /usr/local/lib/" $1 " ]") == 0 { next } { print "so:" $1 }' | grep -v -e perl -e python -e tcl )"; apk add --no-cache --virtual .postgresql-rundeps $runDeps bash su-exec tzdata zstd icu-data-full $([ "$(apk --print-arch)" != 'ppc64le' ] && echo 'nss_wrapper') ; apk del --no-network .build-deps; cd /; rm -rf /usr/src/postgresql /usr/local/share/doc /usr/local/share/man ; echo '{"spdxVersion":"SPDX-2.3","SPDXID":"SPDXRef-DOCUMENT","name":"postgres-sbom","packages":[{"name":"postgres","versionInfo":"13.13","SPDXID":"SPDXRef-Package--postgres","externalRefs":[{"referenceCategory":"PACKAGE-MANAGER","referenceType":"purl","referenceLocator":"pkg:generic/[email protected]?os_name=alpine&os_version=3.18"}],"licenseDeclared":"PostgreSQL"}]}' > /usr/local/postgres.spdx.json ; postgres --version:
0.312 + wget -O postgresql.tar.bz2 https://ftp.postgresql.org/pub/source/v13.13/postgresql-13.13.tar.bz2
0.371 Connecting to ftp.postgresql.org (147.75.85.69:443)
131.1 wget: can't connect to remote host (147.75.85.69): Operation timed out
------
Dockerfile:34
2
Answers
After several tests, I'm pretty sure that inside docker build, the env config for https_proxy isn't taken account by the command RUN. It explains why wget ran into timeout I found this article : Docker ignores HTTP Proxy settings completly, but the issus was reported at 2022! : https://github.com/docker/for-linux/issues/1444
I found it! There is nothing wrong with docker side (neither server nor client). It’s due to the wget in the busybox release, we could reinstall the wget with
apk add wget, and wget considers the https_proxy.Problem resolved!