feat(engine): improve the possible dockerfile detection

pkg/utils/get_extension.go

@@ -1,9 +1,11 @@
 package utils
 
 import (
+	"bufio"
 	"bytes"
 	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/rs/zerolog/log"
 	"golang.org/x/tools/godoc/util"
@@ -21,13 +23,36 @@
 		if Contains(base, targets) {
 			ext = base
 		} else if isTextFile(path) {
-			ext = "possibleDockerfile"
+			if readPossibleDockerFile(path) {
+				ext = "possibleDockerfile"
+			}
 		}
 	}
 
 	return ext
 }
 
+func readPossibleDockerFile(path string) bool {
+	file, err := os.Open(path)
+	if err != nil {
+		return false
+	}
+	defer file.Close()
+	// Create a scanner to read the file line by line
+	scanner := bufio.NewScanner(file)
+	// Read lines from the file
+	for scanner.Scan() {
+		if strings.HasPrefix(scanner.Text(), "FROM") {
+			return true
+		} else if strings.HasPrefix(scanner.Text(), "#") {
+			continue
+		} else {
+			return false
+		}
+	}
+	return false
+}
+
 func isTextFile(path string) bool {
 	info, err := os.Stat(path)
 	if err != nil {

pkg/utils/get_extension_test.go

@@ -27,6 +27,11 @@ func TestGetExtension(t *testing.T) {
 			want:     ".tf",
 			filePath: "../../test/fixtures/all_auth_users_get_read_access/test/positive.tf",
 		},
+		{
+			name:     "Get empty extension from a file not named as Dockerfile and without extension defined",
+			want:     "",
+			filePath: "../../test/fixtures/negative_dockerfile/CW671X02_EBM_EVENT_RULE",
+		},
 	}
 
 	for _, test := range tests {

test/fixtures/negative_dockerfile/CW671X02_EBM_EVENT_RULE

@@ -0,0 +1,45 @@
+#!/bin/ksh93
+. ${PROC_DIR:=${0%/*}}/CWPARAM
+export UDB_DB=${WAREHOUSE_DB}
+. ${PROC_DIR}/DB2COMMON
+
+db2 -f ${UDB_CMD}
+
+TABLE=TECW.EBM_EVENT_RULE
+CURSOR_NAME=TSTG_${RUN_TYPE}_EBM_EVENT_RULE
+QUERY="
+SELECT
+		RUN_ID
+		, RPT_CASE_ID
+		, EVENT
+		, RPT_RULE_ID
+		, CHAR('SYMMETRY')
+		, MBR_MPI_ID
+		, CAST(TASKNBR as CHAR(3))
+		, RULE_TYPE_NBR
+		, RESULT_FLG
+		, CASE WHEN EBM_FLG = '0' AND COMPLIANCE_FLG = '0' THEN '0'
+				ELSE '1'
+		  END AS EBM_QUAL_IND
+		, EBM_FLG
+		, COMPLIANCE_FLG
+		, CURRENT_TIMESTAMP
+		, CURRENT_TIMESTAMP
+		, '${SCHED_JOB_NAME}'
+FROM TSTG.${RUN_TYPE}_SYMM_EBM_SUMMARY_RESULT_FL
+"
+
+db2 "declare ${CURSOR_NAME} cursor for ${QUERY}"
+EXIT_CODE=$?
+
+if [[ ${EXIT_CODE} -ne 0 ]]
+then
+	echo "Unable to declare cursor. RC:$EXIT_CODE}"
+	exit ${EXIT_CODE}
+fi
+
+db2 "load from ${CURSOR_NAME} of cursor insert into ${TABLE} nonrecoverable"
+EXIT_CODE=$?
+
+exit $EXIT_CODE
+