Executable file not found on docker container
I'm having some issues trying to run a cmd command inside a docker container using a go application.
This is the output I get:
golang-api | /bin/sh: ./server: not found golang-api exited with code 127
This is dockerfile
from golang:1.18-alpine run apk add g++ && apk add make workdir /app copy go.mod go.sum ./ run go mod download copy . . run make build expose 8000 cmd ./server
This is the makefile responsible for building the command:
linux_amd64 = goos=linux goarch=amd64 cgo_enabled=1 go111module=on
migrate:
cd cmd/migrations/$(folder) && go run main.go
build:
cd cmd && $(linux_amd64) go build -a -v -tags musl -o serverAlso docker-compose.yml
version: '3.1'
services:
api:
build:
dockerfile: dockerfile
context: .
container_name: golang-api
ports:
- "8000:8000"
restart: unless-stopped
depends_on:
- db
environment:
- postgres_url=$postgres_url
db:
image: postgres
restart: always
environment:
postgres_user: postgres
postgres_password: postgres
ports:
- '5432:5432'Full output:
Building api Sending build context to Docker daemon 74.24kB Step 1/9 : FROM golang:1.18-alpine ---> 6078a5fce1f5 Step 2/9 : RUN apk add g++ && apk add make ---> Using cache ---> 2a85b9182b80 Step 3/9 : WORKDIR /app ---> Using cache ---> baf1e6b7047c Step 4/9 : COPY go.mod go.sum ./ ---> Using cache ---> 1f2d031bc1b0 Step 5/9 : RUN go mod download ---> Using cache ---> 471d6f24e6a9 Step 6/9 : COPY . . ---> eaa86ff7cb1b Step 7/9 : RUN make build ---> Running in d6ae6ce79222 cd cmd && GOOS=linux GOARCH=amd64 CGO_ENABLED=1 GO111MODULE=on go build -a -v -tags musl -o server internal/goos internal/goarch internal/race internal/unsafeheader internal/goexperiment runtime/internal/syscall internal/cpu sync/atomic runtime/internal/atomic internal/itoa math/bits internal/abi runtime/internal/math runtime/internal/sys unicode/utf8 unicode container/list crypto/internal/subtle crypto/subtle unicode/utf16 vendor/golang.org/x/crypto/cryptobyte/asn1 internal/nettrace vendor/golang.org/x/crypto/internal/subtle encoding github.com/mymachine/my-api/internal/controllers/dto github.com/mymachine/my-api/internal/controllers/helpers internal/bytealg math runtime internal/reflectlite sync internal/testlog internal/singleflight math/rand runtime/cgo errors sort internal/oserror strconv path vendor/golang.org/x/net/dns/dnsmessage io crypto/elliptic/internal/fiat syscall golang.org/x/text/internal/tag hash bytes strings hash/crc32 reflect crypto crypto/internal/randutil crypto/hmac crypto/rc4 net/http/internal/ascii vendor/golang.org/x/crypto/hkdf regexp/syntax github.com/jackc/chunkreader/v2 bufio crypto/elliptic/internal/nistec internal/syscall/unix time internal/syscall/execenv vendor/golang.org/x/text/transform golang.org/x/crypto/pbkdf2 golang.org/x/text/transform golang.org/x/text/runes golang.org/x/text/width regexp internal/poll io/fs context github.com/mymachine/my-api/internal/entities github.com/jackc/pgconn/internal/ctxwatch embed os github.com/jinzhu/inflection github.com/jinzhu/now internal/fmtsort encoding/binary crypto/ed25519/internal/edwards25519/field crypto/md5 crypto/sha512 crypto/cipher crypto/sha256 crypto/sha1 encoding/base64 fmt internal/godebug encoding/pem crypto/ed25519/internal/edwards25519 path/filepath vendor/golang.org/x/crypto/internal/poly1305 io/ioutil internal/intern vendor/golang.org/x/crypto/curve25519/internal/field vendor/golang.org/x/sys/cpu net/netip crypto/aes crypto/des vendor/golang.org/x/crypto/chacha20 github.com/jackc/pgio github.com/jackc/pgpassfile os/exec os/signal net vendor/golang.org/x/crypto/chacha20poly1305 math/big encoding/hex net/url compress/flate vendor/golang.org/x/crypto/curve25519 log vendor/golang.org/x/text/unicode/norm vendor/golang.org/x/text/unicode/bidi vendor/golang.org/x/net/http2/hpack mime mime/quotedprintable compress/gzip net/http/internal database/sql/driver github.com/mymachine/my-api/internal/pkg/errors encoding/json github.com/jackc/pgservicefile vendor/golang.org/x/text/secure/bidirule golang.org/x/text/internal/language database/sql golang.org/x/text/unicode/norm golang.org/x/text/unicode/bidi vendor/golang.org/x/net/idna os/user crypto/rand encoding/asn1 crypto/dsa crypto/elliptic crypto/ed25519 crypto/rsa github.com/jackc/pgproto3/v2 golang.org/x/text/internal/language/compact golang.org/x/text/secure/bidirule github.com/jackc/pgx/v4/internal/sanitize golang.org/x/text/language go/token vendor/golang.org/x/crypto/cryptobyte crypto/x509/pkix gorm.io/gorm/utils gorm.io/gorm/logger encoding/gob go/scanner golang.org/x/text/internal github.com/joho/godotenv crypto/ecdsa go/ast golang.org/x/text/cases github.com/joho/godotenv/autoload golang.org/x/text/secure/precis gorm.io/gorm/clause gorm.io/gorm/schema gorm.io/gorm net/textproto vendor/golang.org/x/net/http/httpproxy github.com/google/uuid crypto/x509 github.com/jackc/pgtype mime/multipart vendor/golang.org/x/net/http/httpguts crypto/tls gorm.io/gorm/migrator gorm.io/gorm/callbacks net/http/httptrace github.com/jackc/pgconn net/http github.com/jackc/pgconn/stmtcache github.com/jackc/pgx/v4 github.com/jackc/pgx/v4/stdlib gorm.io/driver/postgres github.com/mymachine/my-api/internal/infrastructure/repository github.com/mymachine/my-api/configs github.com/mymachine/my-api/internal/services github.com/mymachine/my-api/internal/services/transaction github.com/mymachine/my-api/internal/controllers/handlers/health github.com/gorilla/mux github.com/mymachine/my-api/internal/controllers/handlers/transaction github.com/mymachine/my-api/internal/router github.com/mymachine/my-api/cmd Removing intermediate container d6ae6ce79222 ---> 621aa6a266de Step 8/9 : EXPOSE 8000 ---> Running in 3cbd17d32c37 Removing intermediate container 3cbd17d32c37 ---> 754f71a7753e Step 9/9 : CMD ./server ---> Running in dfcdc8cd45ce Removing intermediate container dfcdc8cd45ce ---> 511dbf89a001 Successfully built 511dbf89a001 Successfully tagged my-api_api:latest Creating my-api_db_1 ... done Creating golang-api ... done Attaching to my-api_db_1, golang-api golang-api | /bin/sh: ./server: not found
Correct answer
The problem has been solved.
Somehow, the RUN cd cmd command doesn't seem to generate files in the expected directory.
Try using RUN go build cmd/main.go instead of using makefile which works, @paltaa also pointed this out in the comments.
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